News from UC Master Gardener Program of San Diego County

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June in the Garden

This month: inspect for powdery mildew, rust, aphids, and other potentially damaging pests.

A winding garden path through flowering plants and trees. Credit: PxHere, CC0 Public Domain

Read about more things to do in your garden this month.

Joyce Gemmell's

Vegetable Gardening Guide

Ensure your veggies are getting sufficient water by watering deeply and checking saturation depth.

Go to the vegetable planting guide on our web site

or download the vegetable planting guide here:

Want to Become a UC Master Gardener?

Follow this link to learn how you could become a UC Master Gardener

Photo of Master Gardeners Julio Estrada & Nick Roach

Matilija Poppy – California’s Fire Following Flower

In this month’s California Garden Magazine, learn all about this “fried egg” flower that can thrive in San Diego.

Matilija Poppy and bee. Photo Credit: UC Master Gardener Jodi Bay

Follow this link to read Matilija Poppy: California's Spectacular Fire-Following Flower by UC Master Gardener Kathy McKee

Hotline FAQ: I’ve heard the word “hydrozoning” – what is it and how does it work?

Answer: Hydrozoning is key for a healthy garden.

Image of yard plan image for hydrozoning. credit: Guzmans Greenhouse

Read the article here on our web site:

Do You Know about the New “Zone Zero” Requirements?

This SAN DIEGO U-T article highlights California’s new “Zone Zero” home fire safety perimeter requirements.

Photo of phased compliance chart. Photo credit: SDFD

Read the article here on our web site:

Pest Note: Mexican Fruit Fly Quarantine Declared Across portions of San Diego County

This destructive pest infests over 50 types of crops, making them inedible.

Click this UC ANR site to learn more about the quarantined areas

Save the Date: Fall Plant Sale – Saturday, Sept. 12 in Balboa Park

Save the Date!
Saturday, September 12, 2026
9 AM to 3 PM

Balboa Park, Casa Del Prado Room 101 and Patios A and B

Shop fantastic bargains on a variety of plants, refurbished garden tools, fresh local produce, delightful birdhouses, and imaginative garden art.

Participate in our free demonstrations and presentations and don't forget to bring a working pruner or lopper, as our Tool Care Committee will clean, sanitize, and sharpen for free!

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The Master Gardener Association of San Diego County supports the University of California Master Gardener Program of San Diego County