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Master Gardeners of
Greene County Newsletter
August 2025
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Table of Contents - August 2025
Get Ready for Your Fall 2025 Plantings
Why Onions Bolt—and How to Keep It from Happening
Important Reminder: How to Stay Hydrated
WEBINARS, CLASSES AND EVENTS
Learn to grow - Free gardening classes - Monthly - Aug 2nd
International Monarch Butterfly Monitoring Blitz! - Until Aug. 3rd
Intro. Into Food Forests & Foraging by Springfield Community Gardens - Aug.6th
The 30th Annual Insect-O-Rama - Aug 8th
Missouri Master Gardener Online Training Classes - Starts Aug. 10th
Dispelling Myths of Native Gardening - Aug. 13th
International Master Gardener Conference - Reg. ends August. 15th
Women Owning Woodlands - Aug 20th - Monthly
Wildflowers and Whitetails - Aug 26th
Fall In Love With Gardening; Fall Garden Workshop Event - Sept. 27th
MGGC State Conference June 5-7th, 2026 - Plan Ahead
New Workshops From Penn State - 30 Courses
Native Plants on Growing the Ozarks Podcast
Agriculture Workshop Videos by Springfield Community Gardens - 91 Videos
Food Preservation - Ongoing
Beekeepers, Explore Organic Methods
Horticulture Webinar Wednesdays
Organic Gardening Online Course
Get Your Lawn and Garden Questions Answered @ Weekly Garden Hour
# # #
Ask A MO Master Gardener Facebook Group
Trees and Shrubs
Birds
Flowers and Pollinators
Tomato Articles
Soil Sampling Information
Four Garden Disease Articles
Researched Based Articles of Interest
Interesting Tidbits of Knowledge
Roses
Japanese Beetles
Additional Newsletters of Interest for August's Reading
Weekly Gardening Tips from MGGC
Ask A Master Gardener Q&A: Springfield News Leader
Garden Links
Get Your Soil Tested
A Last Thought
Previous Newsletter
Need a Speaker
Greene County Giving
For All Your Gardening Questions - Hotline
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Gardening Questions?
Or Soil Samples
The Hotline is staffed from 10-4 M-F. They can take soil samples preferably on Thursdays. Please call before coming in to check availability of volunteers. If no one is available, leave a message. Someone will get back to you as soon as possible.
Readers statewide can pose questions by calling 417-874-2963 or fill out an 'Ask A Master Gardener' form or email us at hotline@mggreene.org with your question and contact information.
| | Get Ready for Your Fall 2025 Plantings | | |
If you are a new or seasoned gardener, the University of Missouri Extension program has valuable information available for your review to assist with making the 2025 gardening season productive. Below are some guides to get you started. More will follow monthly, or you may do an online search by topic at this MU Extension website here.
Remember what growing zone you are in. Find by zip code for US or for map of Missouri.
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It's August! Now is the time to start your cool weather crops for the fall season. Hope you have your seeds ready and started. If not, then time to order. Be sure to check the Vegetable Planting Calendar (see below for link) to see when is the best time to set your new plants out.
You can start: cabbage, kale, broccoli, brussel sprouts, spinach, lettuce, just to name a few.
Your spinach and lettuces, you might want to get heat tolerant varieties for this next month. And it will still be quite warm in September, but still plenty of time to do succession planting for them. Then you can go back in September and start planting your cool season spinach and lettuces.
| Time to head out and sow some Chinese cabbage Writer Linda Geist for MU Extension, July 21, 2025: The sunny, warm days and cool nights of a typical Missouri autumn are ideal for cool-season vegetables such as Chinese cabbage, said MU Extension horticulturist David Trinklein. Now is a good time to sow Chinese cabbage seeds so plants will be ready to establish in the garden in late summer. Learn more here. | Harvest all season long with succession sowing By MU Extension Mar. 7, 2025: With a little bit of planning, gardeners can enjoy small amounts of fresh produce throughout the season by succession sowing, says MU Extension hort specialist Eliza Pessereau. Succession sowing, sometimes called relay planting, means planting seeds of a particular crop at regular intervals so that the plants mature at different times. Learn more here. | Be sure to keep up your watering, those tomatoes and other vegetable are not dead yet. Do not get water on leaves unless very early in the mornings. While you are watering your flowers and vegetables, don’t forget that those trees need it too. Set up a drip watering for younger trees especially. Get the hose on a slow drip and water for at least an hour at twice a week. | |
Your garden is in a groove, and now consider these late summer tips:
- Keep an eye on pest damage. Now's a good time to stock up on pest-control supplies. Be careful not to get the stuff that kills beneficial bugs too. Be sure to read all of the directions before spraying on your plants or bugs.
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It is too hot to feed your plants now. They will try to grow and they need to wait for cooler temps. Only feed what you start in September for your fall garden. You want those to put on new growth then. The rest of the garden, leave alone.
| NOTE: Anything that kills bad bugs also kills good bugs. Pesticides can be extremely harmful to birds, bats, other wildlife (including in runoff, the aquatic environment), us, pets, etc. You might find this an informative read, 'Protecting Honeybees & Native Pollinators' by UMass Extension. Learn more here. More research info is now available. NOTE: Try other Integrated Pest Management (IPM) Principles and Practices first. Learn more about IPM here. | Flea beetles & Integrated Pest Management Strategies by Missouri Botanical Garden: Since flea beetles are so small and active, it is easy to miss them. Small round holes in leaves and insects that jump like fleas are two signs that a plant is infested with flea beetles. These shiny oval beetles may be black, brown, bronze, or striped and are only 1/10 inch long. They quickly leap out of sight when disturbed. Learn more here. | Now is a great time to start spraying your Kaolin Clay on those squash, melon and cucumber leaves to prevent squash bugs from eating all of your leaves. It is also good for just the tomatoes to prevent stinkbugs or for flea beetles on your eggplants and other vegetables. It will help stop any other hard-shelled beetle, too. In a quart sprayer add 3/4 C of Kaolin Clay (Surround®) to 1 quart of water. Shake well. Continue to shake while spraying. It settles quickly. Be sure to get the underside of the leaves too if you can. For tomatoes, just spray the green tomatoes. DO NOT spray flowers on any of the above plants. This does NOT kill the bugs, they just do not like walking on it. It is a safe spray and is just clay. It usually stays on for several rains before you have to spray again. But keep up spraying on new foliage and new tomatoes. | | Be sure to order your garlic for fall planting NOW. Most places want you to pre-order and supplies are limited. You plant garlic in the fall for summer harvest. You get much bigger bulbs this way. There are many different varieties, so be sure to do your research on how each one tastes. Do you want big cloves or smaller ones? It should tell in the description in your fall catalogs or online. | | Also, be sure to start looking at your bulb catalogs for your spring flower garden. It will soon be time to start planting those, too. Go ahead and pre-order those too. They will be shipped out when it is time for your zone. (Springfield and surrounding area is in zone 6b) | | A few of the following articles are repeats based on requests and demand from readership. | | |
SAVE THIS LINK! Republished by Request:
Insects, Pests, and Problems in the Garden Complied by Missouri Botanical Garden: If you have plants, you will more than likely experience some issues with them. We have compiled over 200 common plant-related issues that we come across at the 'Kemper Center for Home Gardening' based on what home gardeners experience. Many of these issues... are created with the Midwest in mind. In our resource guides, we have followed an integrated pest management (IPM) approach where simple, safe, and less invasive strategies are listed first. Begin your research here.
| | Common Diseases in the Home Garden by Peng Tian, Asst.MU Extension Prof. January 2025: Parasitic diseases and nonparasitic disorders can cause serious vegetable losses in home gardens. Many species of microorganisms — including fungi, bacteria, viruses, phytoplasmas and nematodes — cause diseases of vegetable crops. Plants from the same family often are susceptible to the same diseases. Learn more also and review 'Related publications' here. | | Republished by Request: Are you a new vegetable gardener or just want to learn more? If so review Vegetable Gardening by James Quinn & David Trinklein, MU Division of Plant Sciences for MU Extension: Basics of vegetable gardening covering many topics for the new or improved gardener here. | | Vegetable Planting Calendar - For planning when to do succession gardening for your vegetable and flower gardens, both first time gardeners and seasoned professionals can benefit from this guide available from MU Extension. The guide provides a complete list of planting dates and varieties that do well in Missouri. "If you live within the Ozarks plateau, you may want to follow the north Missouri planting dates due to the possibility of late spring frosts. If you follow the south Missouri planting dates for spring plantings, be prepared to cover plants for frost protection.” The guide also provides information on the following: how much to plant per person; how much seed to purchase for a 100-foot row; row spacing; inches between plants in the row; depth of planting; days from planting to eating; and vitamin content of the vegetable. You may read and obtain a copy (print out PDF version) of the Vegetable Planting Calendar guide sheet online here. | | Plant Diagnostic Clinic: Guidelines for Collecting and Submitting Samples MU Plant Diagnostic Clinic offers digital sample submission' Writer: Linda Geist, published in MU's The Network - April 2025: MU’s Plant Diagnostic Clinic now offers a digital diagnosis service to quickly identify plant health problems. Growers can easily submit photos of plants injured by insects, pathogens, weeds, environmental stress or improper care, says Peng Tian, director of the clinic. Uploading photos saves the time and money of shipping physical samples. “Most importantly, it enables faster identification and treatment, which helps save plants promptly,” says Tian. Learn more here. | | Don't forget to get your Garden Journal! Find it here. You still need it for your fall garden or to help you plan for next year’s. Write your experiences or weather situations and how well your gardens grew this year. Not just for vegetable gardens, but also for flower gardens. | | What Is Onion Bolting and How to Keep An Onion from Bolting; by Jackie Rhoades for Gardening Know How: Onions are easy to grow; however, even in perfect soil, nutrient, and light conditions, gardeners all face a problem over which they have little control: onion bolting. Learn more here. | | IMPORTANT REMINDER: How to stay hydrated over the summer by Mayo Clinic, Food & Nutrition July 2022: Staying hydrated during the hot summer months is an important part of enjoying the season... make sure you drink enough water to stay hydrated. This is necessary as it will keep your body — and mind — functioning at its best. So, how do you know if you’re drinking enough water? Let’s tap into the facts and explore some of the best tips to keep you hydrated all summer long, here. | | WEBINARS, CLASSES & EVENTS | | |
Learn to grow - Free gardening classes
Monthly on Saturdays at 9 am
Presented by
Master Gardeners of Greene County
Location:
Springfield Botanical Center
2400 South Scenic
Springfield, MO 65807
Planting a fall garden - Saturday August 2, 2025,
9am in the Master Gardener Demo Garden
**Bring a lawn chair for the outdoor class
Backyard Greenhousing – Saturday September 6, 2025,
9am in the Botanical Center meeting room
Worm Composting – Saturday October 11, 2025,
9am in the Botanical Center meeting room
Winter Sowing – Saturday November 1, 2025,
9am in the Botanical Center Meeting room
Seed Starting – Saturday January 31, 2026,
9am in the Botanical Center Meeting Room
No registration required
No fee
Questions, contact: Master Gardeners of Greene County Hotline at: 417-874-2963.
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International Monarch Butterfly Monitoring Blitz!
From now until this Sunday, Aug. 3
Head outside and report any sightings of monarch butterfly adults, eggs, caterpillars, and chrysalises, as well as, milkweed plants. Your sightings help provide researchers with a snapshot of summer monarch and milkweed distribution. Please report your sightings and observations to Journey North! Here.
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Introduction Into Food Forests & Foraging
by Springfield Community Gardens
Wed., Aug 6, 2025
At 6:00 pm
Learn about our Rogers Food Forest and enjoy a quick foraging hike around our lot and down the block to see what is growing in August! Hosted at Rogers Food Forest, 1436 N Rogers Ave, Springfield, MO 65802. For more details use this Facebook event link or for questions call: 417-414-7129
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The 30th Annual Insect-O-Rama
Friday, August 8
6:30-9:00 pm
At the Springfield Conservation Nature Center. Insect-o-Rama is a free, family-friendly celebration of insects and their role in nature. The event is supported by volunteers of Friends of the Garden and others who present 'buggy' activities for all ages—from toddler games to fly tying, insect photography, beekeeping and silk moth rearing.
The goal is to inspire participants to discover the wild world just beneath their feet. One young visitor said, “my two favorite holidays are Christmas and Insect-o-Rama!”
No registration required, for more information call 417-888-4237 plus read more here.
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Missouri Master Gardener Online Training Classes
Aug. 10, 2025 to Dec. 23, 2025
Want to Become a Master Gardener? Missouri Master Gardener Online Core Training Registration is Now Open! This Fall 2025 training from Aug. 10, 2025 to Dec. 23, 2025, fee $200. This 15-week course is designed to provide students with in-depth horticultural knowledge. Students may continue on to become a Master Gardener volunteer on behalf of University of Missouri Extension. Master Gardeners provide research-based information to the public on matters pertaining to horticulture and environmental preservation. Additionally, the course will benefit anyone seeking broad-based knowledge related to horticulture and gardening. Learn complete details and register here.
You could also contact your local MU Extension Office about any in-person training classes they may have this year. Find your county office here.
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Dispelling Myths of Native Gardening
Wed. Aug. 13
4:00 p.m Free Zoom Webinar Panel
Grow Native! Topics to be explored include native landscape design styles and maintenance; challenging assumptions around pollinators, small mammals, and insects; the differences among natives, nativars, and cultivars; tips on beneficial versus nuisance insect identification; and more. Complete details and register here.
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Registration for the 2025
International Master Gardener Conference
August 25-28, 2025 Register Now!
Dear Master Gardeners and Gardening Enthusiasts, Conference Dates: Aug. 25-28, 2025. Location is Online, join from anywhere in the world! Registration Rate: $210. Registration closes Aug. 15, 2025. All registrants will have access to ALL sessions until Jan. 31, 2026. For complete details visit our website: IMGC 2025 here.
Plus to register, click here.
After months of behind-the-scenes planning and curating a fantastic roster of presenters, we are ready to welcome you to an inspiring, educational, and engaging virtual experience designed for gardeners of all levels. This four-day virtual conference brings together Master Gardeners, Extension professionals, horticulture experts, and passionate home gardeners from Canada, the United States, Europe, South Korea, and beyond. Features: NINE KEYNOTES + 70 BREAKOUT SESSIONS + FOUR TOURS & THREE MOVIES! Don’t wait! Secure your spot today and be part of a global community committed to making a difference through horticulture!
Visit our website.
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Women Owning Woodlands
3rd Thursday of the Month, Starting Aug. 20th
12:00 pm
Please join us for our virtual meeting on the 3rd Thursday of the Month (time noon) and share with your friends - all are welcome. Women Owing Woodlands (WOW) works towards building a community of women land stewards across Missouri to share information, support, and experiences.
Contact Sarah Higgins (sarah.higgins@missouri.edu or 636-797-5391 ext. 5057) with any questions. Sign-Up for Women Owning Woodlands Newsletter Here.
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Wildflowers and Whitetails
Tues. Aug. 26
6:00 p.m. Free live Zoom webinar
Join MDC and NDA. Invited are landowners, land managers, and others interested in managing deer on their properties to join the webinar on open-land management practices to enhance white-tailed deer habitat on their properties. It will begin with a presentation by the MDC private lands deer biologist followed by MDC and NDA staff answering participants’ questions.
Learn more details and instructions here.
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Fall In Love With Gardening;
Fall Garden Workshop Event
Saturday, Sept. 27th
8:30 am - 2:30 pm
By Master Gardeners of the Ozarks. Join us at the New Testament Christian Church, 21016 Main St, Reeds Spring, MO 65737, for our Fall Garden Workshop where you'll learn tips, tricks, and techniques to help your garden thrive—whether you're a seasoned grower or just starting out!
Continental Breakfast 8:30; Gardening Programs start at 9:30; Lunch Provided by Lillee’s Catering; Garden Vendors, Marketplace and Raffle - bring cash! Speakers and Topics include:
Kelly McGowan, "Fall Pollinator Gardens";
Skip Easter, "Planting & Caring for Trees";
Nathan Bell, "New Plants in '26";
Matthew Huchteman, "Growing Small Fruit for the Home Garden"
Non-refundable registration fee of $25 due by Sept 22, 2025; For questions email: events@mgozarks.org More details and register online here.
| | Come a few days early to enjoy the many of the exciting actives, shows and fun adventures in Branson and surrounding areas. We have a few surprises for you. | | |
New Workshops From Penn State - 30+ Courses
For yourself or....
Train Seasonal Employees & Career Professionals; Train Your Landscape Crew & Save by Penn State Extension May 1, 2025: With over 30 courses to choose from, find topics to meet the training needs of both new employees and career professionals. Our employee landscape training courses provide new hires with the basic skills they need to hit the ground running. Or invest in career professionals and further develop their expertise.
Online course topics include: Basic skill training + Plant identification and usage + Pruning trees and shrubs + Pest and disease management + Plant biology and taxonomy + Landscaping safety. You Save More When You Train More! Learn the details here.
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Native Plants on Growing the Ozarks Podcast
Watch this newest podcast episode that aired this week on KSMU - Ozarks Public Radio. This week's podcast is about native plants. Sadia Blattert, Master Gardeners of Greene County member, was May's guest. Here is the link (also includes some previous podcasts), Podcast are hosted by Kelly McGowan. Field Specialist in Horticulture. MU Extension in Greene County. Learn more below:
Every third Wednesday of the month at 9:45 am on KSMU
Mark your calendar! Love gardening? Curious about the natural world? Growing the Ozarks is your monthly dose of science-based gardening and nature insights every third Wednesday of the month at 9:45 am. Host Kelly McGowan with the MU Extension chats with local Master Gardeners of Greene County, Springfield, MO and Missouri Master Naturalist, Springfield Plateau Chapter about everything from expert tips for thriving Ozarks gardens to discovering the region’s unique ecosystems.
PLUS: To learn more about Missouri's native plants visit the Grow Native! website here.
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Agriculture Workshop Videos
by Springfield Community Gardens
These 91 workshops videos were generously funded through U.S. Department of Agriculture (USDA) grant funding. Join us as we dig deep into a variety of regenerative agriculture topics! Pick from the 91 YouTube videos here.
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Food Preservation
By MU Extension. This ongoing self-paced course provides research based information needed to safely and successfully preserve food at home. Participants of all levels of food preservation experience are welcome, including individuals with little or no previous food preservation experience. This course covers pressure canning, boiling water bath canning, steam canning, dehydration, and freezing. Highlights include preserving salsas, pie fillings, pickling, sweet spreads, and harvesting and storage of produce.
Registration is $30.00
Click here for more information and registration.
Be sure to read the bi-monthly Preserve It Fresh, Preserve It Safe newsletter in the newsletter section.
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Calling all beekeepers!
Explore Organic Methods!
by Penn. State Extension: Ongoing
Check our new intermediate beekeeping online self-paced course to learn the science and practice of beekeeping. Discover organic methods for managing your honey bee colonies.
For details on 'Beekeeping 102' continue here.
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Horticulture Webinar Wednesdays
Topics on approximately 146+ videos with more added weekly. The horticulture trainings are provided by agents and specialists from the Univ. of Kentucky discussing gardening topics from vegetables to fruit to landscaping and lawns.
You can join the online webinar class that begins 12:30 pm EST / 11:30 am CST on Wednesdays. Click to review and register here.
Also, previous archived topics for you to review and watch on YouTube here.
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Get your Lawn and Garden Questions Answered
at the Garden Hour with MU Extension
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Virtual Town Hall: Mandy D. Bish - MU Extension Specialists will address lawn, garden, and insect questions during the 'Garden Hour' with MU Extension. NOW EVERY Wednesday of the month from 12-1pm. The virtual event is free. To register for the virtual event and/or ask a gardening question, please visit.
To see recordings from previous events, please check out the YouTube videos on the MU Extension IPM channel here.
For more information visit. Or contact Mandy D. Bish, MU Plant Science & Technology at (573) 882-9878 or email: bishm@missouri.edu
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Readers Special Notice
Are you a member of the statewide
‘Ask A Missouri Master Gardener’ Facebook Group?
Do you or a friend have a question, or need information about Landscaping? Gardening? House Plants? Lawn Care? Ask a Missouri Master Gardener! Get the help you need.
The Master Gardeners of Greene County recently took over the day-to-day management for the statewide ‘Ask A Missouri Master Gardener’ group, here, in conjunction with the University of Missouri Extension.
The group, also, has posts about some the newest information and articles on gardening, plus other topics of interest, from MU Extension and other providers.
Join us today!
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Black Cherry (Prunus serotina) by Missouri Botanical Garden Plant Finder: Prunus serotina, commonly called black cherry, wild cherry or wild rum cherry, is native to eastern North America, Mexico and Central America. In Missouri, it typically occurs in both lowland and upland woods and along streams throughout the state. Learn more here.
PLUS: Black Cherry by MDC: Family is Rosaceae (roses). Black cherry is a medium to large tree with a straight trunk, somewhat hanging branches, and a rather spreading, rounded crown. Continue reading here.
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Growing and Marketing of Elderberries in Missouri - University of MO center for Agroforestry By Patrick L. Byers, Andrew L. Thomas, and Michael A. Gold, Univ. of MO; Mihaela M. Cernusca, ND State Univ. and Univ. of MO; Larry D. Godsey, MO Valley College and Univ. of MO: This article contains a lot of information including 'Propagation.' Elderberries may be propagated by several means. Read pdf article here.
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Controlling Bagworms by OSU Ext., July 11, 2021: If you have observed damage happening in your trees or shrubs and see that the leaves have been eaten or are turning brown, there’s a good possibility you’re dealing with bagworms... If not controlled, bagworms can completely defoliate a plant, which usually kills a host plant like juniper. Broadleaf plants are not killed but may be weakened, leaving them more susceptible to attack from other pests. Learn more here.
PLUS: Bagworms Landscape & Ornamentals by Timothy J. Gibb and Clifford S. Sadof, Ext. Entomologists, Purdue Univ. Extension: Read on here.
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Birds of Summer by Matt Seek From Missouri Conservationist August 2025: A Survey of Swallows. A single swallow, perched alone on a utility line, would make for a poor summer indeed. To learn more continue reading here.
Also In This Issue See: Hellbender Wrinkled, Rare, and Remarkable Body; Partnership and patience sow success in restoring Missouri’s hellbender population + On the Front Lines of Fauna; MDC’s mission to manage wildlife.
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Hummingbirds remember every flower they visit and every yard that supports them. Let your yard be a landmark on their migration map. Plant native tubular flowers.
TWO LINKS: How to Make Hummingbird Nectar by National Audubon Society: Hummingbirds may be some of the smallest birds in the world, but fluttering those tiny wings can be quite a workout. In a few easy steps, you can bring these nectar-loving birds to your feeder. Read on here.
Nectar-rich Natives for Hummingbirds by Grow Native! Plant a variety of native perennials and blooming shrubs to create continual feast for Ruby-throated Hummingbirds. Hummingbirds seem to prefer bright red or orange colored flowers, but also are attracted to blue, purple and white colored flowers. The hummingbird’s long bill is best suited for sipping nectar from tubular or funnel shaped blossoms. Many of these plants also attract butterflies. Continue reading
here.
| | Link: Animalhelpnow.com Be sure to change the water out frequently according to the picture above based on the temperature outside. | | |
A Path To Protect Pollinators by MU Extension, Emily Althoff, Media Contact July 28, 2025: The Highway 13 Butterfly Coalition is working to make Missouri a fueling station for pollinators as they migrate between Canada and Mexico... Communities along the route include Eagleville, Bethany, Coffee, Jameson, Gallatin, Hamilton, Kingston, Polo, Richmond, Harrietta, Lexington, Higginsville, Warrensburg, Clinton, Osceola, Humansville, Bolivar, Brighton, Springfield, Nixa, Spokane, Reads Spring, Branson, Stone Ridge and Blue Eagle. Learn more about this here.
PLUS: The Highway 13 Butterfly Trail Here.
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NOTE! Consider registering your current or new Native Pollinator Garden with Plant Grow Fly (PGF). Join our growing list of registered pollinator gardens! These gardens span the across the Midwest and beyond. Each patch of habitat is important to pollinator, grown from a single pot on your porch to an entire prairie restoration, each of us can do our part. Thank you to all the PGF partners for their outreach and, most importantly, thank you to our PGF registered gardeners! If your pollinator garden has not yet been registered, please join us in our effort, it's free and easy! Click here to learn more and register today.
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Daisies bring sunshine and blooms year after year Writer Linda Geist for MO Extension July 23, 2025: Anyone who has driven through the country in late June or July probably has likely noticed an abundance of white daisies along roadsides and in fields. Commonly is called oxeye or field daisy (Leucanthemum vulgare), this plant is sometimes used in flower gardens and is one of the easiest of all perennial flowers to grow, said MU Extension horticulturist David Trinklein (MDC notes, it was introduced long ago from Eurasia). Read on here.
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How to Revive Near-Dead Hydrangeas and Save Your Garden in the Process by Mary Marlowe Leverette for The Spruce 07/14/25: Hydrangeas are one of the most popular perennials ... Improper light, sun, soil, water, temps, or fertilizer, pests and plant disease can damage hydrangeas. Some conditions that cause hydrangeas to die can be reversed if caught and corrected quickly. Read on here.
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Growing Home Garden Tomatoes Revised by David Trinklein. Horticulture Extension State Specialist, Division of Plant Sciences & Technology, May 2022 Read here.
Plus Review: Growing Tomatoes in Containers - Yard and Garden by Iowa St. Ext. here.
| | Tomato Leaf Curl by David Trinklein, Plant Science & Tech. for MU IPM: Continue reading here. | | |
Rotten tomatoes in garden? Blossom-End Rot by Linda Geist for MU Extension July 13, 2023: Your beautiful tomato plant is setting fruit and soon has nice green tomatoes. Then... a dark sunken spot shows up at the bottom of the fruit. You might think an insect or disease has attacked your plant, but such is not the case... Today, it is called blossom-end rot. It is a physiological disorder caused by a calcium imbalance. Read more here.
PLUS: Blossom-End Rot by M. Godfrey for Hort. Mag.: There is a dark spot on the bottom of the tomato. What should I do? What other plants get blossom-end rot? Answer here.
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Tomato hornworms Facebook Video Reel - Post by MU Extension July 9, 2025 · Tomato hornworms are big, green and hungry! These chunky caterpillars can grow up to 4 inches long and will strip your tomato plants bare if left unchecked. They’re masters of camouflage, blending in with the leaves—so spotting them early is key. But don’t worry! Heart of Missouri Master Gardener Jolie Russell is here with expert tips to help you protect your plants and keep your garden thriving. Watch on Facebook reel to learn how to stop these worms in their tracks here.
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Soil Sampling Information
Soil Sampling Depth and Collection Techniques for Soil Fertility and Soil Health Testing by Staff Members, MU Extension July 2025: Soil testing is an important cornerstone of sound nutrient management and comprehensive soil health assessment... Improper sampling can introduce significant errors in the results, potentially leading to inaccurate nutrient recommendations, economic losses, and missed opportunities to enhance soil productivity and long-term soil function. Follow MU Extensions soil-test-based recommendations, learn more here.
NOTE: MU Extension in Greene County / Springfield area offers the testing service, use this link for assistance, here.
Many other MO counties offer services through their local MU Extension Office, use list here, here.
Or by shipping samples direct to the Univ. of MO Soil Testing Facilities, outlined in the article above.
| | Four Garden Disease Forms for Submission | |
Plant Disease; Plant/Weed; Insect/Mite; Turfgrass Disease; PDF Identification Forms by MU Extension, see listed below:
Plant Disease Identification Form by MU Extension June 2025: This downloadable PDF form is for people who need to take and ship samples to the MU Extension Plant Diagnostic Clinic. Start Here.
| | Plant/Weed Identification Form by MU Extension June 2025: This downloadable PDF form is for those who want to have a plant identified by the to the MU Extension Plant Diagnostic Clinic. Start Here. | | Insect/Mite Identification Form by MU Extension June 2025: This downloadable PDF form is for people using the Plant Diagnostic Laboratory, it identifies the cause of plant diseases, as well as disorders caused by insects, herbicides, nutrient imbalances and many other factors. Start Here. | | Turfgrass Disease Identification Form by MU Extension March 2015: This downloadable PDF form is for those who need to take and ship samples to the MU Extension Plant Diagnostic Clinic. Start Here. | | Researched Based Articles | | |
Ticks and Tick-borne Diseases by Richard M. Houseman, Asso Prof of Entomology, MU Extension: Ticks are the most important vectors of disease in domestic and wild animals throughout the world and are second only to mosquitoes as transmitters of human disease. Learn more here.
PLUS: Ticks MDC Field Guide: Note: This field guide page is intended to supply basic introductory biology and natural history information about three Missouri species of ticks. It is not intended to diagnose tick-borne diseases or provide treatment information. If you are experiencing possible symptoms of tick-borne illness or have questions about medical issues, please consult your doctor or other health care provider. If you have a tick-borne illness, it is important to begin treatment as soon as possible.
Learn more here.
PLUS: 'Show-Me Ticks' by Angie Daly Morfeld from Missouri Conservationist: February 2023 here.
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Milkweed tussock moth caterpillars (Euchaetes egle). Learn more here: 'Meet the Milkweed Tussock Moth and Caterpillar' by Rachel Maidl for Birds & Blooms; Updated on Aug. 25, 2022 here.
Plus: Milkweed Tussock Moth Caterpillar: Essential Facts for Gardeners and Nature Enthusiasts by Daniel Marlos & Piyushi Dhir for What's That Bug.com here.
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Rain barrels in the home landscape Authors, Julie Weisenhorn & Annalisa Hultberg, Extension educators. NOTE: Water collected in a rain barrel is not considered a potable water source, meaning it is not drinkable and has not been tested to meet microbial water quality standards to protect public health. Because the water from a rain barrel is not potable, it should not touch the edible part of any plant such as greens, fruit, root vegetables, herbs and edible flowers. Learn more about rain barrels, use and care here.
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Bee Swarm Catcher List: Missouri State Beekeepers Association (MSBA): A swarm of honeybees that are clustered, hanging on a branch or on another object. Most often, a swarm of bees is very docile and not a threat. They are in the process of looking for a more permanent home. The beekeepers listed here are not endorsed by the MSBA. They are listed here for information only.
| | Looking for red, white, and blue in nature By Joe Jerek for Missouri Dept. of Conservation (MDC) July 2025: MDC encourages people to discover red, white, and blue in nature. MDC offers some suggestions to get started finding red, white, and blue in nature. For information on Missouri plants, animals, and more continue reading here. | | Using Wood Ash in the Home Garden by Univ. of Wisconsin Agri. Extension: Wood ash can provide certain soil nutrients and can be used to raise soil pH. However, if used incorrectly or excessively, problems can occur. Learn more in this fact sheet here. | | The Great Okra Divide Writer, Linda Geist for MU Extension July 7, 2025: Few are neutral about this unique-tasting vegetable. There are many gray areas in life. That’s not the case with people’s opinions about okra. People either love it or loathe it. Okra lovers point toward its unique flavor and many uses. Okra haters can’t see how anyone can eat something so slimy. Read on here. | | When your garden becomes a drive-thru for wildlife; Intervene by putting up roadblocks Published by MU Extension, July 2, 2025: Most gardeners know the frustration of having a beautiful garden decimated by wildlife. Just like people, deer and other critters are drawn to food that is tasty and convenient. A garden is wildlife’s equivalent of a fast food drive-thru. Learn more here. | | |
Bats of Missouri: Information for Homeowners by Robert A. Pierce II, MU Extension Publication. Bats are unique and interesting animals. Because of their nocturnal nature and widespread misconceptions about them, they are the subject of myths and folklore that make them one of the most mysterious and misunderstood mammals. The presence of a bat in a house causes more alarm than does any other wildlife species. These fears are unwarranted. Contrary to what you may have heard. Continue reading here.
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What animals make holes in lawns and gardens? Good question, without a sighting or game camera it is difficult to know for sure. Here is more on the topic. 'Lawn and Garden Holes: What Is Digging Holes?' Answer by Bonnie L. Grant, Certified Urban Agriculturist for Gardening Know How: Size does matter. If you are experiencing holes in your yard, there are a variety of things that could be causing them. Learn more here.
PLUS: Diagnosing Holes in the Yard by IA St. Univ. Extension: This guide helps diagnose what's digging, tunneling, feeding, and otherwise disturbing turf grasses, read here.
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Interesting Tidbits of Knowledge | | |
Facebook user? If so, for our readers. Help to ID bugs/insects/spiders Plants and bugs/insects/spiders are almost interchangeable; in many cases one can't get along without the other and in other cases one destroys the other. For excellent bug/insect/spider ID you can use one of these two groups if it would be helpful: Insects and Spiders of Missouri (and adjacent states) here.
And/or Bug Identification Group - People Helping Others ID Bugs here.
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INTERNET PLANT SITES Revised; Editor's Note: This comprehensive pdf list has been compiled and updated by longtime volunteer Barbara Clark. This is an online list of websites dedicated to plant identification and information including: resources; native flowers and domestic plants; wildflowers and plants to attract birds and pollinators; weeds and invasive pests. After review, you are welcome to share this list with your friends! Suggestions welcome for review. This list's pdf is based on the Greater Ozarks Hosta Society (GOHS) website here.
GOHS Website.
| | Study Shows Plants And Green Décor In Hospital Rooms May Aid Stress Recovery by Lesley Henton for Texas A&M Univ., June 27, 2025: Researchers use immersive virtual reality (VR) to understand how different visual elements in hospital rooms affect relaxation and cognitive restoration in patients experiencing acute stress.... The study also found that participants who reported higher levels of stress after the simulated trauma benefited even more from these natural elements. For these individuals, the presence of plants had an amplified effect on both relaxation and mental clarity. Continue reading here. | | What are the health benefits of chia seeds? by Strategic Communication for Missouri State Univ. News July 2025: What are the health benefits of chia seeds? Registered dietitian Daniela Novotny shares why these tiny seeds are good for you. Chia seeds are small but mighty. They are rich in fiber, protein, omega-3s and antioxidants. They help support digestion, reduce inflammation and boost heart health. In a recent Martha Stewart article, registered dietitian Dr. Daniela Novotny explains how chia seeds increase satiety and reduce the risk of chronic disease. Just be sure to soak them before eating. Soaked chia seeds are easier to digest and safer to consume. Learn more using article links here. | | |
TWO LINKS: Rose rosette continues to plague garden roses Writer, Linda Geist for MU Extension Rose rosette is a devastating disease of roses. There is no cure. Infected rose bushes should be removed from the landscape and destroyed, said David Trinklein, horticulture specialist, MU Extension. Read on here.
Rose Rosette Disease by Christopher J. Starbuck, MU Division of Plant Sciences: Rose rosette is a fatal disease of plants in the genus Rosa which is caused by a virus-like pathogen, spread ... easily dispersed on wind currents. The most common host plant is the noxious weed, Rosa multiflora ... over the years, there have been increasing reports of rose rosette infecting domesticated roses. Learn more here.
PLUS: Rose Rosette Disease: Frequently Asked Questions from Clemson Extension Mar 27, 2025, here.
| | Japanese Beetles - They are Here | | |
Have Japanese Beetles? Organic Management Options for the Japanese Beetle at Home Gardens by Lincoln U & MU Extension IPM Programs: To control this invasive pest, many people are interested in using less or no insecticides, and other control options that are safer for homeowners and also compatible with organic production. Learn more about this here.
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Don’t fall into the Japanese beetle trapping trap by Marissa Schuh, UMN Extension educator, horticultural IPM; in the end, you can be drawing large numbers of Japanese beetles to your area, while only capturing some of them. Studies have shown that traps lead to more plant damage in the areas they are placed. One study found that a trap placed alone led to nearby vegetation having more damage than in similar areas where no traps were placed. Learn more here.
PLUS: 'Japanese Beetles' by MO Botanical Gardens here.
| | Additional Newsletters of Interest for August's Reading | | Garden Spade Newsletter July 2025 By MU Extension Horticulture, Articles include: The Plants of Time-Gingko + Kids Ask Dr. Bug + Butterfly Magnets for the Garden + Weed of the Month-Smartweeds + Preserving the Harvest + Who Did It? + Horticulture Insights-Tomato + July Gardening Tips & Tasks + Upcoming Events + Details & More, Read pdf here. | | Preserve It Fresh, Preserve It Safe Newsletter Issue #4 July/August 2025 by MU Extension: A newsletter for those who preserve food at home. This edition covers topics such as 'Questions & Answers About Growing & Processing Tomatoes' + Dehydrating Pickles & Creating Pickle Powder + Related Archived Publications. Continue reading here. | | The Monthly Monitor The MU Extension Greene County Newsletter July 2025: This newsletter is intended to help friends and supporters of MU Extension in Greene County connect with the latest highlights, impacts and events. Numerous topics of interest! Share with a friend, sign up for your own free issue. Review here. | | Garden Gab News The Springfield Community Gardens (SCG) Newsletter for July 2025: Welcome! Thank you, keep up with latest SCG news, join us in our free upcoming online or in person workshops, classes, events and more. Read the news here. | | Lawn & Garden News by MU Extension July 2025: Gardening resources you can use! Credible info for Missouri gardeners' -topics: Gardening Calendar + Nativars: Superheroes of the Plant World + Video -Control the Tomato Hornworm + Subscribe to the MU Extension YouTube channel for more gardening videos + Archived issues. Details & More Here. | | Nutrition & Health Newsletter by MU Extension July 2025 Get Healthy in 2025! Topics: Tips for Choosing the Best Watermelon + Chronic Disease Self-Management Free Online Course + A Taste of Missouri: Sweet Corn with Recipes + Podcast: Are High Protein Diets Worth the Hype? + Missed Issue Archive. Details & More Here. | | Let’s Preserve Newsletter By Penn State Extension July 2025 Topics: Bushel of Ideas for Preserving Sweet Corn + Peach Season + Well-Preserved Onion + Signs of Food Spoilage + Learning Opportunities, Webinars, Online Courses, Preserving Food at Home Resource Guide. Details & More Here. | | Home Garden Newsletter By Penn State Extension July 2025 -Topics: Using the Right Tool is Self-Care + Gardening Safely in the Sun + Healthy Tips to Garden with Fewer Aches and Pains + Ticks and Tick Disease + Gardening and Aging + Creating a Sensory Garden + Gardens After Flooding + Home Gardening Categories + Find Your Interests by Topic + Online Learning Opportunities. Details & More Here. | Missouri Produce Growers Newsletter by MU Extension Hort Team, July 2025: Explore an Innovative New Method to Control Plant Diseases +American Elderberry Propagation + Insectary Plants + High-Density Apples + Learn How to Graft Tomatoes + Launder Clothing Used During Pesticide Applications + Missouri Farmland Values + Videos, Workshops, Classes, New Publications. Resources, Newsletters with details and more here. | Missouri Prairie Foundation News July 15, 2025 Topics: Summer 2025 Issue Missouri Prairie Journal + Register for MPF Annual Dinner & Silent Auction Now + July 16th Grow Native! Free Webinar: Vitis rupestris – The Native Missouri Grape that Saved French Wine + Governor Kehoe Signs Invasive Plant Bill into Law + July 30th Grow Native! Free Webinar: Lessons Learned at Primrose Prairie + 25 Years of Grow Native Landscape Resources + Tours, Programs & More, Details Here. | August Gardening Tips & Tasks by Donna Aufdenberg, MU Extension for Missouri Environment and Garden (MEG) IPM News July 24, 2025: Find these tips and tasks to keep you busy in and around the garden in the month of August... Categories, Topics & Details, learn more here. | | Plastic News July 2025 by Stream Teams United: In this month's plastic news, we're bringing you plastic-free back-to-school tips, hot-off-the-press news and research and can't miss webinars. Don't forget to register for the upcoming Plastic Community Workshops. Plus, you're invited to join Beyond Plastics' Summer Book Club with tons of book recommendations for kids and adults alike. Read on here. | | The Missouri Conservationist Magazine by Missouri Dept. of Conservation: A monthly publication about conservation in Missouri. Started in 1938, the printed magazine is free to residents of Missouri. Read the new August 2025 issue, review back issues and join the monthly readership here. | The Engaged Neighbor Newsletter by David Burton for MU Extension July 25, 2025: An informative communication with individuals interested in becoming an engaged neighbor and improving their neighborhood and community. Relevant, useful, and research-based information related to neighboring and our Engaged Neighbor program. Continue reading here. | Missouri Prairie Foundation News July 29, 2025: Protecting Prairies & Promoting Native Plants. Please find MPF news and upcoming events, including plant sales, webinars, workshops, Missouri State Fair and much more summarized and detailed here. | | Lawn & Garden Newsletter by MU Extension July 2025: Gardening resources you can use! July Gardening Calendar + Nativars: Superheroes of the Plant World + Online Event: Learn How to Interpret Soil Test Reports + Video Resources: Control the Tomato Hornworm & Subscribe to the MU Extension YouTube channel for more gardening videos + Review Previous Newsletters. Details and More Here. | | All Things Missouri July 2025 by Center for Applied Research and Engagement Systems (CARES) MU Extension - Topics: The 'Missouri Map Room' is a free resource which provides access to over 35,000 map layers. + State Needs Assessment, MU Extension is seeking feedback, via a short survey. We’d like to hear from you, please complete survey. + Featured Data: Flood Risk & Resources. + Visit us at the Missouri State Fair Aug 11. Details and more here. | | |
Weekly Gardening Tips
From Master Gardeners Chapter News
by Isaac Walker
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June 27, 2025:
Deadheading
Deadheading is when you remove the spent flowers of a plant. This has multiple benefits. First, it encourages the plant to continue flowering. Once a plant has gone to seed, it will devote its energy to the seed instead of producing more flowers. Deadheading keeps the plant’s energy focused on flowering. Deadheading also improves the aesthetics of your garden, keeping it neat and fresh. Some plants, like cornflower and Love-in-a-Mist, even start to die once they have produced seed, so you can increase the longevity of your plants.
For most plants, you can pick off dead blooms with your fingers, but some plants, specifically roses, require more careful trimming. Also, consider leaving the flowers in the fall so that birds and other wildlife can eat the seeds.
More on the topic from MU Extension, 'Boost Your Blossoms by Deadheading' Writer Linda Geist, May 16, 2023, read here.
Plus Penn State Extension, 'To Deadhead or Not? Your Final Answer is...' Read here.
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July 4, 2025
Using IPM Strategies for Summer Squash
Year after year, I have planted Zucchini, and year after year, it is besieged and destroyed by squash bugs and squash vine borers. Typically, my primary strategy is to remove infested plants quickly, burning them to kill as many pests as possible, and to diligently hunt down squash bugs every day or so, looking under each leaf for eggs, nymphs, and adults. Not only were these tactics labor-intensive and time-consuming, but they were relatively ineffective. For a few weeks, I could stay ahead of the pests, but sooner or later, a vine borer would evade my defenses and drill into a plant, effectively killing it within a week or two.
Fortunately, after even just a little research, I discovered I’m not the only one to have this problem. On a commercial level, squash bugs and vine borers can cause significant economic damage, so research has been conducted on how to use Integrated Pest Management (IPM) strategies to effectively defend against these pests. The MU Extension has a guide on IPM control of summer squash pests (full article linked below) and suggests using trap crops to lure the pests into one location, where they can be easily exterminated.
A trap crop is a plant that a certain pest prefers over a cash crop, which is the plant you want to harvest from. For squash, the MU Extension recommends using Blue Hubbard Squash, a gourd-like winter squash, as your trap crop. Squash bugs and squash vine borers make their way to the Blue Hubbard Squash, skipping over your cash crop to head straight to their favorite menu item. The trick to attracting the pests to your trap crop is to make sure your cash crop is about two weeks younger than the trap crop. For example, transplant two-week-old Blue Hubbard Squash at the end of your squash rows at the same time that you sow the seeds for your summer squash. This ensures that the larger, more appetizing Blue Hubbard Squash will properly lure in the pests.
The MU Extension estimates that you need six to eight trap crop plants for every one hundred cash crop plants. For smaller-scale gardeners, that translates to one trap crop for every dozen or so plants.
Once you have effectively attracted the pests to the desired plant, you need to eradicate them. There are both synthesized and organic chemicals that work well for this, but keep in mind that insecticides can be detrimental to pollinators as well as pests. Spray early in the morning or late in the evening to avoid killing bees and other beneficial insects. --
Works Cited: MU Extension Guide. Trap Cropping. March 16, 2017 here.
PLUS: Learn more in general about Integrated Pest Management (IPM) Principles and Practices here.
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July 11, 2025
Watering Wisely - Garden Care
So far it has been a rainy spring and summer. This April was the wettest on record for this area and we have received frequent showers throughout the summer. This is Missouri, however, and we are unlikely to make it through the summer without a drought, so here are some tips from MU Extension specialist Debi Kelly on keeping your gardens healthy, even in drought conditions.
Water deeply: Instead of watering more frequently and only soaking a shallow amount of soil, take enough time to let the water penetrate at least six inches into the soil. This allows the soil to hold more water and also lets more of the plant’s roots take in the water. Additionally, water will evaporate slower if it is deeper in the soil because of the insulation that the soil provides.
Water in the morning: This slows evaporation, allowing the water to seep deeper into the soil as well as helping to prevent disease.
Mulch: Use mulch to keep water in the soil, and protect against weeds which steal valuable water from your plants.
Don’t fertilize in a drought: Fertilizers encourage growth, which requires more water and energy. Normally, you would want to encourage growth, but in dry conditions, this can lead to the plant using too much water.
Other factors: If an area is well shaded, it will dry out much slower, so don’t overwater. Raised beds and pots will need much more frequent watering than a typical garden bed.
Reminders! Don’t neglect your trees and shrubs. Saplings need lots of water in a drought but even established trees and shrubs would benefit from supplementary watering in a time of bad drought. Also remember that succulents thrive in drier conditions so watch out for over watering in plants like Hens and Chicks (Sempervivum) and Portulaca (Rose Moss and Purslane).
Works Cited: 'Water Deeply and Wisely During A Drought' by Debbi Kelly for MU Extension, 5 June 2023. Read here.
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July 18, 2025
Planting for Pollinators
Not all pollination happens in the daytime. When the sun goes down and bees and butterflies retire for the evening, a new wave of pollinators emerges. Moths are the primary pollinators of the “night shift.” Entomologist Chris Hartely even stated in an article for the Missouri Conservationist* that moths are “[without a doubt] more significant pollinators than butterflies because there are more of them.” Here are a few things to know about nighttime pollinated plants.
Plants that lack fragrance (like zinnia, marigold, and coneflower), have incompatible flower shapes for moths (like snapdragon or lupine), or close at night (like tulips, spiderwort, and hibiscus) will not attract moths, but many other plants take advantage of the extra pollination.
Moonflowers are a close relative of morning glory, but their flowers open at night, making them perfect for night gardens but also for moths. Moonflowers have large, white, trumpet-shaped flowers and they require trellising.
Missouri Evening Primrose is a great native that opens in the evening. It is a hardy plant with yellow flowers.
There are lots of additional options for night-blooming plants, and they make a great addition to any garden to keep your night-time pollinators and moon gardens well-supplied with flowers.
Additional reading materials; Notes by GD:
*'Spreading Life in the Darkness' by Dan Zarlenga | From Missouri Conservationist: May 1, 2020: Featuring comments by: Chris Hartley, entomologist with the Sophia M. Sachs Butterfly House in Chesterfield, MO. Read here.
Grow Native! by Missouri Prairie Foundation; Start and explore the website with 'Natives for Pollinators' here.
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July 15, 2025
Fire Blight
Fire blight is a destructive bacterial disease that infects fruit trees, especially apples and pears. It takes hold in the spring and is very difficult to eliminate once a tree is infected. The bacteria spread through splashing rain, wind, and improper pruning (always sanitize your tools!).
Watch for signs like cankers and dying branches (see picture below), which are key indicators of fire blight. MU Extension recommends planting resistant cultivars to help prevent infection, as the disease is hard to remove once established. For infected trees, pruning affected areas or applying the pesticide Streptomycin are the most effective treatment methods. See photos of Fire Blight below.
'Fire Blight' by Peng Tian for MU Extension, revised March 2025: To learn more continue reading text here.
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Ask the Master Gardener Q&A:
By Helen Vanella, Master Gardeners of Greene County,
Special to the Springfield News-Leader
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For use 7-20-25
Q: The leaves of some of my coneflowers and black-eyed Susan’s have white spots and holes. Is this mildew? If so, how can I treat it?
A: Although it’s hard to tell without a photo, I would guess this is not mildew but most likely from insects feeding on the leaves. Since these are native plants, many useful insects will feed on these but this is not generally something that needs to be treated. Nature is very good at balancing out the beneficial and harmful, if we allow things to do so. Someone once said “If something isn’t eating your plants, then your garden isn’t part of the natural ecosystem.
Q: My tomato plants are growing well, have tons of leaves, but no flowers or fruit so far. What am I doing wrong? I have fertilized these often.
A: The first thing I would check would be the label on the fertilizer container. If you have good soil, tomatoes usually do well without any extra feeding, especially extra nitrogen. Too much nitrogen will lead to more leaves but no fruit. Ideally, a soil test should be done before adding much in the way of soil amendments. The best tomato fertilizer would have more phosphorus and potassium than nitrogen, such as 5-10-10 (nitrogen-phosphorus-potassium). Compost is also great for tomatoes (and the garden in general), by providing slow-release nutrition while also improving the texture of the soil.
Q: Some of my tomatoes look fine on the outside, but when cut open, the insides are rotten and somewhat fuzzy. What is causing this? Is there any way to improve the conditions of the fruit?
A: Odd as this may seem, this is just another way that blossom end rot can show up, instead of the classic bottom rot. This may look like a disease, but it is a physiological condition caused by a calcium deficiency. In almost all cases, calcium is present in the soil, but due to weather conditions such as cooler temperatures and excessively rainy conditions, the plants are not able to move the calcium from the soil into the fruit. Once the weather warms, the condition should improve. This is normally seen in the first tomatoes of the season but can also happen later in the season.
Consistent watering will also help improve and prevent this condition. Watering deeply but less often is a good practice, encouraging he roots to grow more deeply which will help during drier spells and also help the roots reach more nutrients in the soil. Extra calcium should not be added without determining is there is truly a calcium deficiency present. Only a soil test can determine is any specific soil amendments are required. Any damaged or rotting fruits should be removed and disposed of.
Q: How long does it take to grow tomatoes to first harvest?
A: There are so many varieties of tomatoes, but they are usually classified as early (65+ days), midseason (66 to 79 days) and late season (80+ days). Days to maturity are calculated from date of transplanting into the garden.
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For use 6-29-25
Q: Many of the leaves on my iris are turning brown, with brown spots and streaks. This started shortly after they bloomed. What causes this and what can I do about it?
A: This problem is fairly common, especially after our particularly wet spring, and is caused by a fungal disease. The first thing to do is remove any affected leaves and discard, do not compost. If the rhizomes are somewhat covered with mulch, uncover them to help improve air circulation. If the rhizomes are too deep, they can be divided, making sure not to plant too deeply. July/August are the best times to move iris, however iris are tough, can handle being moved almost any time. Planting well before winter will allow the rhizomes to develop new roots before extreme cold arrives. Treatment with a fungicide might also be an option.
Q: Wintercreeper is taking over areas of my yard. How can I get rid of it? Why is this horrible plant still being sold in nurseries?
A: Wintercreeper is quite difficult to remove, but persistance is key. If pulling out by hand, get all the roots or it will return. Cutting is also another method that can work. After cutting, application of a herbicide will help prevent return. Mulching, after cutting and herbicide use, using overlapping cardboard and at least 6 inches of mulch will also help, but must be left in place for at least two growing seasons.
As for why it is still for sale, new legislation, Senate Bill 105 has just been passed by Missouri House of Representatives, is currently waiting for the Governor to sign by July 14, 2025. This will ban the sale of wintercreeper and several other noxious weeds starting January 1, 2027. Until that takes effect, it is not illegal to sell this plant. There are also cultivars of this plant, sold as Fortune's Spindle or Euonymus fortunei, as well as varigated types that may look different but are just as invasive and hard to eliminate.
Q: Is it possible to save seeds from a blueberry, plant them, then grow and harvest fruit from the results?
A: While it is technically possible to do what you describe, this isn't necessarily the best way to propagate blueberries. Yes, you can save seeds from a fully mature fruit, as long as the seeds are ripe, but it can take a while to have a fruit-bearing plant. Germination of these seeds can take weeks to months after planting and they require cold stratification as well. In addition, it would take a few years for the resulting plant to start bearing fruit. If the particular variety of blueberry is a hybrid, the plant may not bear fruit at all or the fruit may be different from the original source of the seed. An easier way to propagate a particular type of blueberry would to either take cuttings or just buy new plants, if possible. On the other hand, if you want to try growing from seed, it might be a fun experiment.
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Get Your Soil Tested NOW!
If you haven't gotten your soil tested in the last 2-3 years, and your harvest is poor you need a soil test; or if you are using a low tunnel then wait until after harvesting.
Basic soil testing analysis is done by the MU Soil Lab in partnership with our Master Gardeners of Greene County. Results include fertilizer and lime recommendations. Additional tests are available for nutrient management plans, environmental issues, potting mixes, compost, manure and water usage. Be sure to get what you need out of a soil sample so you understand what you need to add in the way of nutrients for what you will be planting. Remember that different areas may need different Ph or additional fertilizers. Like corn is a heavy feeder.
Each sample should contain a total of 2 cups of dry soil and from 6 to 7 inches deep and about 5 or 6 different areas. Results are typically provided within two weeks.
Bring the soil sample(s) to the Greene (or your local county office) County Extension office between 10 a.m. and 4 p.m. on Thursdays. Master Gardeners can complete the paperwork and submit your test. One of our extension specialists will review your results. In most cases, gardens, lawns and fields should be tested every two years.
The cost is $30 per sample. Feel free to call if you have any questions:
417-874-2963.
| | A LAST THOUGHT Come out and see the summer blooms and vegetable garden in our gardens. There are many other gardens besides the Master Gardener Demonstration Garden. Come spend the day, bring a picnic basket and view them all. They are in the Springfield Botanical Gardens at Nathanael Greene/Close Memorial Park, 2400 S. Scenic Ave, Springfield, MO. Tram services are offered, call and check for information. Plan a group or family visit today. A number of gardening organizations are headquartered there, including MU Greene County Extension office and the Master Gardeners of Green County Hotline. Questions call 417-891-1515 for a tour the gardens and all of the other attractions online. | | |
Need a Speaker for a Meeting or Group?
Master Gardeners of Greene County are available at this time to speak to garden clubs, civic organizations, schools and other groups on a wide variety of topics within the world of gardening, horticulture, landscaping and the environment.
Please keep us in mind for a future date.
For more information.
Email Us
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OUR OFFICES ARE INSIDE
Springfield-Greene County Botanical Center
2400 S. Scenic Ave.
Springfield, MO 65807
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