Forest

Valley oak tree atop a hill of brown grass.
Event

Webinar: Mediterranean Oak Borer & Other Pests of California Oaks

Apr 10, 2025

The Mediterranean Oak Borer (MOB) is an invasive ambrosia beetle that infests several species of white oaks in California: valley oak, blue oak, and Oregon oak. The beetle is spreading rapidly in Napa, Lake, Sonoma, and Sacramento Counties and has been detected in neighboring El Dorado, Yolo, and Mendocino…
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Post-fire field tour
Event

Post-Fire Forest Resilience Workshop - Plumas County

Apr 30, 2025 - May 28, 2025

Register now for the upcoming Post-Fire Forest Resilience workshop series in Plumas County! UC extension advisors and local professionals will provide information and resources on post-fire forest management for recently affected private landowners. Online webinars are scheduled each Wednesday evening from…
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A light brown rodent with black and white stripes around it's eyes and a bushy tail sitting on a tree stump.
Article

CA Resident Tests Positive for Plague

September 2, 2025
A South Lake Tahoe resident has recently tested positive for plague, likely transmitted by the bite of an infected flea. While human cases of plague are rare, they can be serious. Before this most recent case, the last reported case was also in El Dorado County in 2020. Plague is caused by bacteria,…
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A brown shield-shaped insect walking on a green leaf.
Article

New Invasive Pests Webinar Mini-Series

July 22, 2025
Invasive species are reshaping California’s natural and urban landscapes. UC IPM’s new Invasive Species Mini-Series explores the many ways invasive species impact our lives, from harmful garden pests and aquatic hitchhikers to destructive tree pests, invasive weeds, and the policies that guide prevention and…
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Stacks of firewood for sale below a canopy with a sign that says "firewood."
Article

Destructive Pests Hide in Firewood

June 9, 2025
By Lindsey Hack
While bringing firewood from home for your weekend camping trip may seem harmless, many invasive pests can hide in firewood and cause serious harm to California’s forests and urban landscapes. You can help limit the spread of these unwanted hitchhikers by collecting or buying firewood close to where you plan…
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