UCCE Master Gardeners of Riverside County

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UCCE Master Gardeners of Riverside County We provide research based gardening information to Riverside County, Contact - http://ucanr.edu/sites/RiversideMG/advice/

To extend research-based knowledge and information on home horticulture, pest management, and sustainable landscape practices to the residents of California and be guided by our core values and
strategic initiatives." - UC Master Gardener Program Mission Statement

The UCCE Riverside County Master Gardeners are a group of volunteers who have completed a 10-month-long training program. They share their knowledge through community service, educational outreach, propagation, lectures and demonstrations. The volunteers also answer questions from the public about home gardening via a telephone hotline and email. Call the Riverside Master Gardener Hotline: (951) 683-6491 ext. 231 Mon-Fri 9am - 12 noon Or leave a message and we'll call you back

Email your question to:
West Riverside County - [email protected]
East Riverside County - [email protected]

Include as much detail as possible and any photos that illustrate your problem/question.

🌹 COMING UP THIS WEEKEND! 🌹Don't miss the 35th Anniversary Celebration of Rose Haven Heritage Garden! πŸŒΉπŸŽ‰πŸ“… October 16–18,...
10/14/2026

🌹 COMING UP THIS WEEKEND! 🌹

Don't miss the 35th Anniversary Celebration of Rose Haven Heritage Garden! πŸŒΉπŸŽ‰

πŸ“… October 16–18, 2026

πŸ“ Rose Haven Heritage Garden, 30592 Jedediah Smith Road, Temecula

There's something different happening each day β€” from Friday's Rededication & Ribbon Cutting to Families in the Garden on Saturday and Art, Music, Poetry & Dance in the Garden on Sunday.

🌿 FREE admission

🎁 Pre-register for a FREE tote bag

🚌 Free parking & shuttle service Saturday and Sunday

Bring your family and come celebrate 35 years of Rose Haven Heritage Garden! 🌹❀️





ucanr.edu/sites/RiversideMG

πŸͺ°πŸ  PESKY FLIES IN YOUR HOME? HERE'S WHAT YOU NEED TO KNOW! 🏠πŸͺ°Have you noticed tiny flies buzzing around your kitchen, ba...
10/13/2026

πŸͺ°πŸ  PESKY FLIES IN YOUR HOME? HERE'S WHAT YOU NEED TO KNOW! 🏠πŸͺ°

Have you noticed tiny flies buzzing around your kitchen, bathroom, or houseplants? You're not alone! Flies can be especially troublesome in California during the summer and fall.

But did you know that different types of flies are attracted to different things in your home?

πŸ”Ž LET'S IDENTIFY THE CULPRITS!

πŸͺ° House Flies & Blow Flies: Often associated with garbage, pet waste, and decaying organic matter. They can carry bacteria and spread disease.

🍎 Fruit Flies: Attracted to overripe or rotting fruits and vegetables.

🚿 Drain Flies: These tiny, moth-like flies breed in the slimy organic buildup inside drains.

πŸͺ΄ Fungus Gnats: Often found hovering around houseplants, especially when potting soil stays too moist.

πŸ’š HOW CAN YOU KEEP FLIES AWAY?

βœ… Keep garbage covered and clean up pet waste.
βœ… Remove overripe fruit and clean food preparation areas.
βœ… Scrub drains to remove organic buildup.
βœ… Allow the surface of houseplant soil to dry between waterings, as appropriate for the plant.
βœ… Repair window screens and seal openings where flies can enter.

πŸ’‘ DID YOU KNOW? Many flies can complete their life cycle in just 7–14 days, depending on the species and conditions!

🌿 The best defense isn't always a pesticide! Good sanitation, eliminating breeding sites, and preventing flies from entering your home are often the most effective ways to manage these unwanted visitors.

πŸ“š Learn more from UC Integrated Pest Management:

https://ucanr.edu/blog/pests-urban-landscape/article/nuisance-flies-home




ucanr.edu/sites/RiversideMG

Photo credit: Unsplash

🐜🌱 ANTS: FRIEND OR FOE? 🌱🐜When you see a trail of ants, do you immediately reach for the insecticide? You may be doing y...
10/12/2026

🐜🌱 ANTS: FRIEND OR FOE? 🌱🐜

When you see a trail of ants, do you immediately reach for the insecticide? You may be doing your soil and plants a disservice!

There are approximately 14,000 known species of ants worldwide, found on every continent except Antarctica. California alone is home to hundreds of species!

Let's learn how these small insects serve as ecosystem engineers and why they are important to our gardens.

🐜 1. Natural Pest Control: Many ants help control pests by eating the eggs and larvae of other insects.

🌱 2. Soil Improvement: Ants improve soil aeration by digging tunnels and creating
underground chambers. These passageways help water and nutrients move through the soil, where plant roots can access them.

🌻 3. Nutrient Recycling: Worker ants carry seeds and decaying insects into their tunnels to nourish the colony. In doing so, they also contribute organic matter and nutrients to the soil.

🐦 4. Supporting Wildlife: Birds, reptiles, and amphibians depend on ants as a food source. These tiny insects are an important part of the food chain!

πŸ’š HOW CAN WE HELP?

It's simple! Leave some areas of your yard wild, avoid disturbing ant hills when they aren't causing problems, and limit the use of broad-spectrum pesticides.

Of course, not all ants are beneficial in every situation. Some species protect aphids and other plant-damaging insects, so it's important to recognize when management may be necessary.

🌎 Though seemingly insignificant, ants play a vital role in our environment!

πŸ“š For more information, click here:

https://onlineentomology.ifas.ufl.edu/about/articles/entomology/why-ants-are-important-what-ants-do-for-ecosystems/

https://ucanr.edu/blog/topics-subtropics/article/ants-are-good

Article by: Betty Guida

Photo credit: Unsplash




ucanr.edu/sites/RiversideMG

Save the date for this upcoming Plant Sale and Free Workshop!Date:  Saturday, November 7, 2026Location:  4500 Glenwood D...
10/11/2026

Save the date for this upcoming Plant Sale and Free Workshop!

Date: Saturday, November 7, 2026

Location: 4500 Glenwood Drive, Riverside, CA
Time: 11:00 a.m. & Noon (see flyer for details)

IPM tips for October. πŸπŸŽƒπŸ‚
10/11/2026

IPM tips for October. πŸπŸŽƒπŸ‚

Fall is finally here! It’s time to prepare for garden and landscape pest problems that could come with the changing season. To see tips more specific to your region, visit the Seasonal Landscape IPM Checklist on the UC IPM website: https://ipm.ucanr.edu/home-and-landscape/seasonal-landscape-ipm-checklist/ .tab=0

🌡🌻 FUN AT THE PALM SPRINGS FARMERS MARKET! 🌻🌡Our UC Master Gardener volunteers, Xochitl and Patricia, had a great time a...
10/11/2026

🌡🌻 FUN AT THE PALM SPRINGS FARMERS MARKET! 🌻🌡

Our UC Master Gardener volunteers, Xochitl and Patricia, had a great time at Saturday’s Palm Springs Farmers Market, along with their special guest, Scarecrow Buddy! πŸ‚πŸŽƒπŸŒ±

A big THANK YOU to everyone who stopped by our β€œAsk the Master Gardener” information table to say hello, ask gardening questions, and learn something new!

We love connecting with our community and sharing research-based gardening information! πŸ’šπŸŒΏ

🌐 ucanr.edu/sites/RiversideMG

🌿🌸 READY FOR THE HOME & GARDEN SHOW IN NORCO! 🌸🌿Our UC Master Gardeners have done it again! πŸ‘πŸ’šWhat an outstanding and be...
10/10/2026

🌿🌸 READY FOR THE HOME & GARDEN SHOW IN NORCO! 🌸🌿

Our UC Master Gardeners have done it again! πŸ‘πŸ’š

What an outstanding and beautiful display they've put together for the Home & Garden Show in Norco! It's something we can all be proud of!

A special THANK YOU to Deborah Anderson and Marilyn Howard for their hard work, creativity, and dedication in making this wonderful display possible! 🌻🌷

Great job, ladies! We appreciate all that you do! πŸ’šπŸ‘




ucanr.edu/sites/RiversideMG

Photo credit: Thurman Howard
Contributions by: Thurman Howard

🌱🎑 A BUSY DAY AT THE SOUTHERN CALIFORNIA FAIR! πŸŒ»πŸ‘§πŸ§’What a day at the Southern California Fair in Perris! Our UC Master Ga...
10/10/2026

🌱🎑 A BUSY DAY AT THE SOUTHERN CALIFORNIA FAIR! πŸŒ»πŸ‘§πŸ§’

What a day at the Southern California Fair in Perris! Our UC Master Gardeners were absolutely swamped with enthusiastic students from throughout Riverside County, ranging from kindergarten through 12th grade! πŸŒΏπŸ“š

A huge THANK YOU to UC Master Gardeners Linda Cummings and Christal Ferlisi for doing an outstanding job keeping up with all the students and teachers! πŸ‘πŸ’š

It's wonderful to see so many young people participating and having the opportunity to connect with our Master Gardeners!

πŸ“Έ Photo Credit & Story Contribution: Thurman Howard

ucanr.edu/sites/RiversideMG

🌿🏑 UC MASTER GARDENERS AT THE INLAND EMPIRE HOME SHOW! 🏑🌿Come visit the UC Master Gardeners of Riverside County at the I...
10/09/2026

🌿🏑 UC MASTER GARDENERS AT THE INLAND EMPIRE HOME SHOW! 🏑🌿

Come visit the UC Master Gardeners of Riverside County at the Inland Empire Home Show!

πŸ“… October 10 & 11

πŸ“ Ingalls Event Center, Norco

⏰ Starting at 10:00 a.m.

Stop by, say hello, and get your gardening questions answered by our Master Gardener volunteers. πŸŒ±πŸ’š

We hope to see you there!



ucanr.edu/sites/RiversideMG

🌱🎑 CALLING ALL UC MASTER GARDENER VOLUNTEERS! 🎑🌱There's still time to volunteer at the Southern California Fair in Perri...
10/08/2026

🌱🎑 CALLING ALL UC MASTER GARDENER VOLUNTEERS! 🎑🌱

There's still time to volunteer at the Southern California Fair in Perris! We have volunteer opportunities available and would love your help! πŸ’š

πŸŽ‰ WE'RE ALL SET UP AND READY FOR THE FAIR!

Thanks to the hard work of our dedicated UC Master Gardener volunteers, our exhibit is ready to go!

πŸ“… TODAY, October 8 – Sunday, October 11, 2026

🌻 VISITING THE FAIR?

Stop by our UC Master Gardener exhibit! We'd love to answer your gardening questions and share helpful gardening tips and information.

πŸ‘ A HUGE thank you to everyone who helped with setup! Your hard work and dedication are truly appreciated!

🌿 See you at the Fair! 🎑





ucanr.edu/sites/RiversideMG

Address

2980 Washington Street
Riverside, CA
92504

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