Weed Control

Yellow flowering shrub in a field.
Urban & Community IPM Webinars: Event

Webinar: Managing Invasive Plants

Aug 21, 2025

In California, invasive plants cause problems such as increasing wildfire risk, damaging ecosystems, and affecting recreation activities. Join us to learn about the impacts of invasive plants and ways you can help prevent the spread of invasive plants.About the Urban and Community IPM Webinar …
Urban & Community IPM Webinars
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UC Master Gardeners of Butte County: Event

Weed ID

May 6, 2026

This workshop explores the nature of weeds, and why it’s important to correctly identify which weeds you are battling. We’ll offer tools to help with this, including a hands-on practicum. Primary strategies for weed control are Integrated Pest Management methods; we’ll have a quick primer on chemical…
UC Master Gardeners of Butte County
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UC Master Gardeners of El Dorado County: Event

Central Sierra: Controlling Weeds (EDC MG)

May 24, 2025

Join the El Dorado County Master Gardeners to learn about weeds commonly found in the home landscape, their culture, and control strategies. Well also discuss highly aggressive non-native weeds which have been introduced into El Dorado County.
UC Master Gardeners of El Dorado County
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Image of the yellow flower of oblong splurge.
UC Master Gardeners of Tuolumne County: Article

Euphorbia Oblongata: Oblong Splurge in Tuolumne County

July 18, 2026
Noxious weed! This “cute” perennial plant grows about 3 feet tall, displaces desirable vegetation, and reduces the biodiversity of our native ecosystems. It was introduced from southern Europe as an attractive ornamental. But it has no natural deterrents, takes over natural habitats, and is quite invasive…
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Puncturevine has yellow flowers, J. Alosi

It’s Puncturevine Season Again!

July 13, 2026
Puncturevine (Tribulus terrestris) is an attractive green plant with small yellow flowers commonly seen growing prostrate along the side of the road. A native to Southern Europe, it’s also referred to as “goathead.” However, underneath its foliage lies danger: spiky seedpods with needle-point spikes. If…
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Text reads "Pest Tips for July". In the background you see a picture of a summer garden, abundant with flowers and fruit trees.

July Pest Management Tips

July 1, 2026
By Yulie Velez
Summer is in full force and while it's been quite hot in many parts of California, it's been very cool in others. That's why UC IPM's Seasonal Landscape IPM Checklist is a useful tool to help you figure out what to do in your region each month! Here are some general tips for keeping your landscape…
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Oxalis stricta (common yellow wood sorrel) is nearly impossible to eradicate in our area. J.C. Lawrence
The Real Dirt: Article

What Weeds Can Tell Us

April 27, 2026
Every gardener knows that weeds are just plants in the wrong place. Webster’s dictionary defines a weed as “a plant that is not valued where it is growing and is usually of vigorous growth; especially: one that tends to overgrow or choke out more desirable plants.” The use of weeds as soil indicators is not…
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A light green plant with many branching stems and bright yellow, spiky flowers.

Managing Invasive Plants: Your Questions Answered!

September 22, 2025
By Lindsey Hack
UC IPM recently hosted a webinar about invasive plant management in California. During the presentation, our speakers Constance Taylor and Jutta Burger from the California Invasive Plant Council (Cal-IPC) answered live questions from attendees. Below are some of those questions and answers. If you…
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