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Jumping spider eating a fly. [Credit: Jack Kelly Clark]
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Webinars: Spiders, Pesticides and Water!

August 11, 2022
By Karey Windbiel-Rojas
Are you concerned about pesticides in our waterways? Join us on August 18, 2022 at noon for UC IPM's free monthly webinar to learn how to keep surface water clean by reducing pesticide use and runoff.
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Thinning canopy is an early sign of Bot canker. [Credit: J. Downer]
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Bot Canker: Have You Heard of It?

July 28, 2022
By Karey Windbiel-Rojas
Ever heard of Bot canker? "Bot" stands for Botryosphaeria which is a plant disease that results in cankers of trees and other woody plants. This fungal disease can be worse under drought conditions when trees are stressed.
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Leaves of a river red gum eucalyptus tree covered with redgum lerp psyllids. The white growths are the “lerp” produced by the immature (nymph) stage of the insect. [Credit: Jack Kelly Clark]
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Redgum Lerp Psyllid Resource Updated

July 25, 2022
By Karey Windbiel-Rojas
If you have eucalyptus trees, you might have noticed white, crusty growth on the leaves. Or maybe you saw a sticky, blackened mess of fallen leaves under a eucalyptus tree. These are signs of the redgum lerp psyllid, one of the most common psyllid pests that damages eucalyptus trees in California.
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Fig 1 Adult female of Polyhagous shot hole borer
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Invasive Shothole Borers Threaten California’s Urban Forests

July 15, 2022
By Karey Windbiel-Rojas, Beatriz E Nobua Behrmann
When tiny tree-killing beetles first arrived in Southern California several years ago and began destroying urban and riparian forests, they raised widespread concerns among both tree experts and affected communities.
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Pampasgrass infestation in a coastal area.
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Invasive Pest Spotlight: Pampasgrass & Jubatagrass

July 8, 2022
By Belinda Messenger-Sikes, Karey Windbiel-Rojas
Pampasgrass and jubatagrass facts Pampasgrass (Cortaderia selloana) is a common ornamental landscape plant that readily naturalizes throughout California's coastal areas and some interior regions.
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Mature plantain plant in a lawn.
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Controlling Weeds Webinar, 7/21

July 8, 2022
By Karey Windbiel-Rojas
Looking for ways to manage weeds in your lawn or landscape? Join us on July 21, 2022 at noon for UC IPM's free monthly webinar to learn about how to control weeds using mostly nonchemical methods.
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Figure 1. A coyote scavenging a dead rat in a suburban backyard. Photo by game camera.
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Rats, Rodenticides, and Research

June 20, 2022
By Niamh M Quinn
Where is rodenticide exposure in wildlife coming from? Is it from use by residents or farmers? Applications by marijuana growers? Or from applications by qualified and trained structural pest control professionals?
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Brownish gray adult squirrel on dirt with its tail outstretched.
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Squirrels: Topic for Webinar on May 19

May 18, 2022
By Karey Windbiel-Rojas
If you are battling with ground squirrels or tree squirrels around your home or property, join us on Thursday, May 19 at noon for UC IPM's one-hour seminar on Squirrels! Dr.
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