Pests And Weeds

Tall, green stalks of giant reed towering over two humans standing in front.
Pests in the Urban Landscape: Article

Keep Invasive Plants Out!

June 11, 2025
By Lindsey Hack
The golden flowers of French broom covering hillsides and the tall, striking stalks of pampasgrass stand out on trails and roadsides. These plants may be beautiful, but they are invasive and harm California’s natural landscapes.  Invasive plants outcompete and crowd out native plants, damaging…
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Bermuda buttercup infesting a bed of landscaped plants.
Pests in the Urban Landscape: Article

Spring is in the Air, and Oxalis is Everywhere

April 17, 2025
By Lindsey Hack
Bermuda buttercup (Oxalis pes-caprae), also called buttercup oxalis or sourgrass, might be a familiar sight in winter and spring, particularly to those who live in coastal regions or the Sacramento Valley. Some people enjoy seeing this plant’s cheerful yellow flowers pop up in their spring gardens, but for…
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Master Gardener Information Desk for home gardener advice
UC Master Gardener Program of Sonoma County: Page

Information Desk

Get free expert help with garden problems and advice from the UC Master Gardener Program of Sonoma County Information Desk supported by research-based information from the University of California and other academic or government institutions.
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UC Master Gardener Program of Alameda County: Page

Purslane, Weed It or Eat It

Purslane is a nutritious plant that has been grown for more than 4,000 years as a food and medicinal plant and is still cultivated in many places today.
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UC Master Gardener Program of Alameda County: Page

Filaree Winter Annual "weed"

Learn how to control filaree weeds in the garden. Discover effective management techniques to protect your pets, manage the weed and keep your garden beautiful.
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UC Master Gardener Program of Alameda County: Page

Enchanting Plants or Garden Thugs?

Learn about garden thugs—ornamental plants that become invasive under the right conditions and spread aggressively, disrupting your garden and your neighbor's.
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UCCE Central Sierra: Page

Central Sierra: Calendar

UC Central Sierra programming includes virtual and on-line training as well as in-person classes and workshops in Amador, Calaveras, El Dorado, and Tuolumne Counties.
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