Pests & Diseases

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Llevan a cabo conferencia para viveristas de California.
Blog Verde: Article

Investigadores de UC ANR apoyan a los viveros de California

September 12, 2025
By DIANA CERVANTES
Santa Paula, CA. – Un tapete de plástico especial, combinado con el uso de desinfectantes, puede ser la primera defensa contra enfermedades en viveros, donde las plantas jóvenes son muy frágiles. Con una medida tan sencilla, se podrían evitar pérdidas millonarias de plantas y dinero. El sector de los…
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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.
Pests in the Urban Landscape: 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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Nice looking lettuce
UC IPM on the South Central Coast: Article

2025 Fusarium wilt of lettuce variety trial field day - Soledad

August 19, 2025
By Christopher A Greer
Please join us for the 2025 Lettuce Fusarium Wilt Trial Field Day in Soledad - August 26, 2025 10 am - 12 pm. Trials include variety evaluations, steam treatment evaluations, and fungicide evaluations. Pre-registration is strongly suggested. Please see full article for additional info and directions.
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Stacks of firewood for sale below a canopy with a sign that says "firewood."
Pests in the Urban Landscape: 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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UC Master Gardener Program of Alameda County: Collection

Bugs and Insects

Learn about the good insects and the pesky insects. Manage common problems encountered in Alameda county in both the vegetable garden and landscape/ornamental environment. Learn to spot invasives and how to manage them.
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UC Master Gardener Program of Alameda County: Collection

Pests

Learn about garden pests, including insects like aphids and earwigs, and wildlife like gophers and deer. Learn how to manage them.
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UC Master Gardener Program of Alameda County: Collection

Invasive species

Invasive insects, plants and animals threaten the health of our gardens and environment. Learn to how to spot invasives and how to report them.
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UC Master Gardener Program of Alameda County: Collection

Diseases

Learn about common problems and diseases of trees and shrubs, including those of fruit trees. Diseases include common fungal problems - peach leaf curl, oak root fungus.
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Thrips/TSWV status in Yolo & Colusa: Article

2025 5th Report-- May 22nd

May 22, 2025
By Patricia A Lazicki, Neil McRoberts
General outlook & thrips populationAs planting wraps up, temperatures remain similar to long-term averages. Thrips population predictions are similar to last week’s update. Generation 2 adults peaked a couple weeks ago; generation three adults are predicted to peak 6/8.  The 3rd and 4th…
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