Maricopa County Master Gardeners

Maricopa County Master Gardeners Maricopa County Master Gardeners use science-based research to educate and advise home, school, and community gardeners to grow responsibly in the low desert.

Master Gardeners volunteer their time and expertise. Our Goals:
Increase efficiency of people's landscapes. Decrease excessive use of pesticides, water, and fertilizers. Decrease amount of green waste in landfills. Increase school and community gardening efforts.

08/26/2026

Last chance to join DIG ONLINE: Mastering Irrigation in the Desert with Donna DiFrancesco, horticulturist and Conservation Coordinator for the City of Mesa.
Stop watering on autopilot. Learn how to use the newly updated Landscape Watering by the Numbers guide to match plant type, soil, emitter rates, and seasonal demand — so you water deeply, infrequently, and efficiently in Arizona’s desert climate.
You’ll walk away able to:
• Calculate accurate run times
• Spot and fix common watering mistakes
• Adjust schedules seasonally for healthier plants and real water savings
📅 Thursday, August 27, 2026
⏰ 6:15 – 8:15 PM (Online)
💵 $20 non-refundable
👉 Register before it closes tomorrow at noon:
https://events.trellis.arizona.edu/en/f44lNu67/g/jKMfGecQ5Z
Class link & handouts sent the day before. Don’t miss it!

⏳ One week left to register!🌵 Ready to stop guessing and start watering like a pro in the Arizona desert?Join DIG ONLINE...
08/20/2026

⏳ One week left to register!
🌵 Ready to stop guessing and start watering like a pro in the Arizona desert?
Join DIG ONLINE: Mastering Irrigation in the Desert with Donna DiFrancesco, horticulturist and Conservation Coordinator for the City of Mesa. She’s sharing the newly updated Landscape Watering by the Numbers guide and showing exactly how plant type, soil, emitter rates, and seasonal demand work together.
You’ll leave knowing how to:
• Calculate proper run times
• Fix the most common watering mistakes
• Adjust schedules seasonally for healthier plants and real water savings
📅 Thursday, August 27, 2026
⏰ 6:15 – 8:15 PM (Online)
💵 Only $20 (non-refundable)
⏳ Registration closes Wednesday, August 26 at Noon — one week left!
Perfect for landscape pros, educators, and homeowners who want deeper roots and smarter water use.
👉 Secure your spot now: https://events.trellis.arizona.edu/en/f44lNu67/g/jKMfGecQ5Z
Class link & handouts sent the day before.

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⏳ One week left to register!🌳 How much is shade really worth?Join DIG IN PERSON: Made in the Shade – Expanding Urban For...
08/16/2026

⏳ One week left to register!
🌳 How much is shade really worth?
Join DIG IN PERSON: Made in the Shade – Expanding Urban Forests with expert Cathy Rymer this Sunday and learn how the right trees can slash energy costs, cool pavement and cars, store carbon, and grow biodiversity in your landscape.
You’ll explore 30+ Arizona-friendly trees and walk away knowing how to:
• Choose the best trees for your style and space
• Plant, water, and prune correctly
• Spot pests, diseases, and early signs of tree failure
📅 Sunday, August 23, 2026
⏰ 2:00 – 4:00 PM
📍 UA Maricopa County Cooperative Extension
4341 E Broadway Rd, Phoenix, AZ 85040
💵 $20
👉 Register before time runs out: https://events.trellis.arizona.edu/en/f44lNu67/g/jKMfGecQ5Z

🍂 Fall is the best season to grow in the Sonoran Desert — and it’s almost here!Join us for this online class and learn h...
08/14/2026

🍂 Fall is the best season to grow in the Sonoran Desert — and it’s almost here!
Join us for this online class and learn how to plan a thriving cool-season vegetable garden with less stress and smarter water use. Discover a simple mnemonic that will have you BRAG-ging about your Peas, plus practical tips on soil preparation, fertilization for roots and leafy greens, and how to handle frost, insects, and changing water needs.
We’ll also cover what to keep (and what to clear) if your monsoon garden is still going strong.
📅 Thursday, September 10, 2026
⏰ 6:15 PM – 8:15 PM (Online)
💵 $20 non-refundable
⏳ Registration closes Wednesday, September 9 at Noon
Perfect for home gardeners ready to make the most of Arizona’s ideal fall growing weather.
👉 Register now: https://events.trellis.arizona.edu/en/f44lNu67/g/jKMfGecQ5Z
Class link & handouts sent the day before.

🌱 Ready to grow your own transplants and save money?Join us in person for DIG Workshop: Sow It Begins – Starting Garden ...
08/12/2026

🌱 Ready to grow your own transplants and save money?
Join us in person for DIG Workshop: Sow It Begins – Starting Garden Transplants From Seed with Maricopa County Master Gardener Coordinator Beth Reidhead.
Skip the expensive store-bought starts! In this hands-on class you’ll learn seed starting mixes, seed treatments, and how to successfully grow vegetable, fruit, and flower transplants. You’ll even try it yourself — all supplies are included.
You’ll walk away knowing how to:
• Choose the right crops and timing for transplants
• Select the best grow media
• Care for seedlings (watering, fertilizing, light & air)
• Harden off plants so they thrive outdoors

📅 Sunday, September 20, 2026
⏰ 2:00 PM – 4:00 PM
📍 UA Maricopa County Cooperative Extension
4341 E Broadway Rd, Phoenix, AZ 85040

💵 Early Bird $30 (register by Sept 4) | Regular $35
⏳ Registration ends Saturday, Sept 19 at 1 p.m.
🚫 No walk-ins | All supplies included | Non-refundable
👉 Register now: https://events.trellis.arizona.edu/en/f44lNu67/g/jKMfGecQ5Z

08/08/2026

Join us in person for DIG: Made in the Shade – Expanding Urban Forests with expert Cathy Rymer and discover how the right trees can transform your landscape, cut energy costs, cool your surroundings, and boost biodiversity.
You’ll learn:
• Why strategically planted trees can reduce heating & cooling costs by ~25%
• How shade drops asphalt temps by 36° and car interiors by 47°
• 30+ tree options suited for Arizona landscapes
• Correct planting, watering, pruning, and how to spot pests, diseases & tree failure risks
📅 Sunday, August 23, 2026
⏰ 2:00 PM – 4:00 PM
📍 University of Arizona Maricopa County Cooperative Extension
4341 E Broadway Rd, Phoenix, AZ 85040
💵 $20
Perfect for homeowners, landscape pros, and anyone ready to grow a cooler, greener urban forest.
👉 Register now: https://events.trellis.arizona.edu/en/f44lNu67/g/jKMfGecQ5Z

08/06/2026

Tired of hearing “I water every day for 30 minutes because that’s what the controller is set on”? Join us for DIG ONLINE: Mastering Irrigation in the Desert with Donna DiFrancesco, horticulturist and Conservation Coordinator for the City of Mesa.
Learn how to use the newly updated Landscape Watering by the Numbers guide to water deeply, infrequently, and seasonally—based on plant type, soil type, emitter flow rates, and real Arizona desert conditions. Walk away with practical calculations, common mistake fixes, and a clear framework that builds healthier plants, deeper roots, and more water-efficient landscapes.
📅 Thursday, August 27, 2026
⏰ 6:15 PM – 8:15 PM (Online)
💵 $20 (Non-Refundable)
⏳ Registration closes Wednesday, August 26 at Noon
Perfect for landscape professionals, educators, and homeowners who want to stop wasting water and start watering with confidence.
👉 Register here: https://events.trellis.arizona.edu/en/f44lNu67/g/jKMfGecQ5Z
Class link & handouts sent the day before.

💧 DIG ONLINE: Mastering Irrigation in the DesertTired of guessing how long to water? Stop wasting water and start wateri...
07/31/2026

💧 DIG ONLINE: Mastering Irrigation in the Desert

Tired of guessing how long to water? Stop wasting water and start watering smarter! Join Donna DiFrancesco, horticulturist and Conservation Coordinator for the City of Mesa, for this practical online class. She’ll introduce the newly updated Landscape Watering by the Numbers guide and teach you the science behind efficient desert irrigation.

Learn how plant type, soil type, emitter flow rates, and seasonal demand work together to create effective watering schedules. Through real examples and simple calculations, you’ll discover how to water deeply and infrequently for deeper roots, healthier plants, and major water savings.

Class Details:
📅 Thursday, August 27, 2026
🕒 6:15 PM – 8:15 PM (Online via Zoom)
💰 $20 Non-Refundable

Registration closes Wednesday, August 26 at Noon

Register here: https://events.trellis.arizona.edu/en/f44lNu67/g/jKMfGecQ5Z

Perfect for homeowners, landscape professionals, and garden educators in the Arizona desert!

Address

4341 E Broadway Road
Phoenix, AZ
85040

Opening Hours

Monday 8am - 5pm
Tuesday 8am - 5pm
Wednesday 8am - 5pm
Thursday 8am - 5pm
Friday 8am - 5pm

Telephone

+16028278201

Website

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