Pests And Weeds

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goats grazing a hillside, three cattle dogs and a man with a cowboy hat trees and mountains around
UCCE Central Sierra: Event

California Targeted Grazing Short Course

Event Date
Feb 17, 2026 - Apr 21, 2026

Once-weekly Zoom webinars culminate in a Davis field day  Practitioners, resource managers, landowners, and students: Learn how targeted grazing can address fuel and vegetation management with UC Cooperative Extension! Join this workshop to learn: The fundamentals of small-ruminant targeted…
UCCE Central Sierra
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Hand and arm covered with glove and long sleeve spraying clear mist from a bottle onto a green shrub.
Urban & Community IPM Webinars: Event

The Secrete Life of Biopesticides

Event Date
Mar 19, 2026

An introduction to biopesticides, including what they are, how they work, and how to use them effectively.
Urban & Community IPM Webinars
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UC Master Gardeners of El Dorado County: Event

Central Sierra: Starthistle (EDC MG)

Event Date
Nov 8, 2025

Come learn about this invasive weed that has taken over large portions of California’s range land and urban landscape. Learn about its origins, how it moves, why it is so difficult to control, how to overcome these difficulties, control methods, and how to design an effective control program.
UC Master Gardeners of El Dorado County
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Green alfalfa field with scattered blooms of purple flowers blowing in the wind.
UC Ag Experts Talk Webinar Series: Event

Webinar: Pest Management in Alfalfa, Small Grains, and Garbanzo Beans

Event Date
Sep 24, 2025

This webinar is part of the UC Ag Experts Talk series. Dr. Michelle Leinfelder-Miles, Delta Crops Resource Management Advisor with the University of California Cooperative Extension, San Joaquin County, will discuss the principles of Integrated Pest Management and pest management in alfalfa, small grains,…
UC Ag Experts Talk Webinar Series
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Oval-shaped insect with triangular marking on its back with membranous wings
UC Ag Experts Talk Webinar Series: Event

Webinar: Field Crop Insect and Weed Management Updates

Event Date
Aug 6, 2025

This webinar is part of the UC Ag Experts Talk series. Nicholas Clark, Associate Cooperative Extension Area Agronomic Cropping Systems and Nutrient Management Advisor, will give an introduction of agronomic cropping systems and their current weed and insect pest management challenges. He will describe…
UC Ag Experts Talk Webinar Series
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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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A spiky bush with yellow flowers stands in a dry empty lot under a bright blue sky with wispy clouds with buildings in the background.
Pests in the Urban Landscape: Article

Yellow Starthistle

July 9, 2026
By Belinda Messenger-Sikes
Yellow starthistle is a spiky, fast-growing, invasive weed in home landscapes, parks, rangelands, roadsides, and natural areas. It outcompetes other plants by growing in impenetrable stands and depleting soil moisture. It's also highly flammable which increases the risk of wildfires where it's growing. …
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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.
Pests in the Urban Landscape: Article

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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