An Important Update On Your Tulsa Master Gardeners
During these unprecedented and challenging times, your Tulsa Master Gardeners have joined others around our community in taking appropriate actions to protect both ourselves and the public from this pandemic. To keep you abreast of our status, the following is a summary of our current actions:

  • The OSU Tulsa County Extension Office building remains closed to all walk-in visitors at this time. Although mostly telecommuting, Extension Office staff are slowly returning to work as per Governor Stitt's Phase Three Guidelines.
  • People can make appointments by calling the main Extension Office phone number.
  • Social distancing is required and masks will be provided for those who do not have them. 
  • All Master Gardener events (Community Events, Speakers Bureau, School Program, Senior Living, Garden Tour, etc.) are postponed until further notice.
  • Soil samples can be left at the Southwest door of the OSU Extension Office in a black lock box. There is a form and a soil bag in a tub on top of the lock box. 
  • While walk-ins to our Diagnostic Center are not available at this time, hotline voice messages are picked up periodically and will be responded to as quickly as possible.
  • MG e-mail traffic is being monitored remotely and will be responded to as quickly as possible.
  • The MG Facebook site is still live and active.

Summer Gardening Tips

 July 2020 / Volume 160
July Horticultural / Garden Tips
Learn about what you should be doing in the month of July.  A selection of garden tips (Vegetable Garden, Lawn, Tree & Shrub, Fruits, Flowers, and General Landscape) can be found by clicking GARDEN TIPS.
For Fruit Tree owners, a couple of handy OSU Fact Sheets on fertilization and maintenance are:

HLA-6259 (Small Fruit Fertilization and Maintenance Schedule)
EPP-7641 (Common Diseases of Stone Fruit Trees & Their Control)
Tulsa Master Gardeners
Video Podcasts

The core mission of the Tulsa Master Gardeners is to provide OSU Extension research-based horticultural information to the local home gardeners and the community.  Given that, we try to reach as many folks as possible through multiple media platforms such as TV, radio, newspaper, magazine, and this e-newsletter. And, as a part of our social media push, we can also be found on Facebook, YouTube and Instagram. To supplement all of these effective ways to communicate, we have now added a new feature - Video Podcasts.  It is called Garden Talk and we invite  you to check it out.

In this particular episode, a general Q&A format is being used. Clicking below will get you answers to various gardening questions that we are receiving at this time: 

MG Podcast 015
MG Podcast 015

June Pest e-Alert: Spider Mites
(aka Red Spider Mite, Two-Spotted Mite)

Spider mites are not true insects but, rather, are classed as a type of arachnid that is a relative to spiders, ticks and scorpions. Adults are reddish brown or pale in color, oval-shaped and very small . . . just about the size of the period at the end of this sentence.

Mites live in colonies, mostly on the underside of leaves, and feed by piercing leaf tissue and sucking up the plant fluids. Feeding marks show up as light dots on the leaves. As feeding continues, the leaves turn yellow and may dry up and drop off.

Spider mites are most common in hot, dry conditions (like right now!), especially where their natural enemies have been killed off by insecticide use. For more information on how to identify and control this hot summer pest, click on SPIDER MITES.

Complete Summer Rose Care Guide

The spring flush of colorful roses is now past, but there are still repeat bloomers throughout the summer, especially in the shrub and ground cover  categories. In fact, the hybridization of roses in today's times are producing more roses that will bloom off and on all summer. 

Deadheading, removing the spent roses, and a light fertilization is the key to keep them blooming. Maintaining healthy rose bushes throughout the summer will guarantee a beautiful display of flowers in the Fall when cooler temperatures arrive. 

Clicking on  SUMMER ROSE CARE will provide you some helpful tips to keep that happening.
Drip Irrigation For Roses and Shrubs

Roses do not "fare" well with water showering their foliage, especially from a sprinkler or lawn irrigation system. These shrubs are extremely susceptible to many foliar fungal diseases. Two ways to avoid this is to plant your rose bed in an area where you can shut off the sprinkler head or plant the roses in large containers. Both ways are very adaptable to drip irrigation. 

The KEY to using this type of system is to use shrub emitters at the end of the ¼" tubing that delivers the water directly to the plant(s). With this type of emitter, you can deliver ½ to 1 gallon of water to the plant(s) in 6-10 minutes.

Click on DRIP IRRIGATION to find out more information that describes how best to assemble a drip irrigation system for your roses and container plants.  An OSU fact sheet link is also included for your convenience.
How To Create Your Own Butterfly Garden

                                        {Monarchs "Puddling"}
What a beautiful specimen the butterfly is! Today, over 20,000 species of butterflies of the Order Lepidoptera are seeking sunshine,  freedom and a little flower. But, what plants, flowers or structures  can you place in your butterfly garden to attract these winged beauties? With a little research  and planning, it is not difficult to provide what a butterfly needs right in your own backyard.

Following these tips will help create a habitat to support the entire life cycle of the butterfly - n ative host plants for caterpillars and n ectar-producing flowers for adult food sources.  Simply click on  BUTTERFLY GARDENS to learn much more about these beautiful creatures and how to attract them to your garden.
Patio Gardening Made Simple
Gardens come in all shapes, sizes, and colors. There is everything from perennials, mixed with brilliantly colored annuals, to xeriscape plantings that provide low maintenance options and a mixture of shrubs and dwarf trees.
These unique mini spaces do much in the way of making a garden look welcoming and lived in. And, when it comes to spaces where we plant, patios are king. A patio or small space provides an opportunity to take advantage of replicating what we typically see in a large landscape but without the maintenance hassles.
To get the most from your patio garden, click on PATIO GARDENS for more 
information on the subject.
Square Foot Gardening . . . Tell Me More

A square foot garden is a contained garden four feet square divided into one foot by one-foot sections instead of traditional rows. It's a great method for beginning gardeners and those with limited time or smaller yard space. This garden can be raised to any height for easy access or planted directly in the ground. The one-foot sections are easy to reach from any side of the garden and either hand watering or drip irrigation work equally well. 

Click on SQUARE FOOT GARDENING for more information on this unique way of gardening.


The Tulsa Master Gardener Foundation is a 501 (c) (3) organization.  As such, it receives no city, state or federal funding for its Tulsa community outreach programs. In fact, the Tulsa's Master Gardener programs are self-funded by its own fundraisers, from member donations, and from public donations.

The main Tulsa Master Gardener fundraiser is its Annual Spring Plant Sale that is held each April.  Other fundraisers include the Garden Tour and Garage Sale in June.  And, one of the most important income sources that sometimes gets overlooked are the personal and corporate donations.  These are so important in helping us to meet our financial obligations and we want you to know they are very much appreciated. 

MG Endowment Fund
The Tulsa Master Gardeners have been around for over three decades, since 1983.  And, we plan to be around for many more decades. Furthermore,  we are considered one of the top five Master Gardener county programs in the entire nation. We are because of the size of our Foundation membership, the number, diversity and activity level of our various community outreach programs, and our overall financial strength!  
So, we are pleased to announce, in partnership with the Tulsa Community Foundation, the Master Gardener Foundation has established an Endowment Fund to ensure our long-term financial strength. Our plans are to build this fund for many years before making any withdrawals from it. Please consider us as you make your annual gift giving as well as longer-term estate planning decisions. Remember, all donations are fully tax deductible! 
If you wish to make a tax-deductible donation to help fund the long-term success of the program, click on   TULSA MASTER GARDENER ENDOWMENT FUND.
If you wish to make a tax-deductible donation to help fund our annual expenses, click on  TULSA MASTER GARDENER AGENCY FUND.
We thank all of you for having been such faithful contributors both in the past and in advance for your future consideration and participation!  Proud to be a part of the Tulsa area - such a giving community!  

Got a Question? Or Maybe a Soil or Plant Sample?
MG logo
Our Master Gardeners are on hand to assist you with even the toughest gardening questions. Visit us in person, by phone, via email or online! Hours of operation are Monday through Friday 9:00 a.m to 4:00 p.m.

Address: 4116 East 15th Street (Gate 6 at the Fairgrounds)
Phone: (918) 746-3701

Need More Information?
law n fertilizer
complex leaves
All about butterfly gardening in Tulsa County.

How to Take a Soil Test
How to collect a good sample of soil from your lawn or garden and get it tested at the OSU lab.

Once you have collected your soil test and gotten the results back, now what? Find out here. 

Show and tell.
Cool Season Lawn Care (Fescue)
12-month maintenance calendar.
State horticulturists, nurseries and growers pick favorite plants, shrubs and trees for use in the Oklahoma landscape. See the winners for this year and years past.

A list of recommended trees with descriptions. 

A list of over 60, by size and color.

Visit our demonstration garden on  15th Street, open 7 days a week. 

Current and historical source of rainfall, air temperatures, soil temps and much more. Click on Bixby station.  

                                    Like what you've seen
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