Pests & Diseases

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Ask Our Helpline

Something in your garden or home bugging you? Do your roses have strange spots? Is something eating your tomatoes? The Merced Master Gardeners are here to help! Contact our Helpline to get answers to your garden challenges and pest problems. Send an email to anrmgmerced@ucanr.edu.
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Christmas Tree Farm
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Central Sierra: Agriculture | Small Farms Information

ATTRA Sustainable Agriculture - Appropriate Technology Transfer for Rural Areas, is a trusted source of sustainable agriculture information and maintains a knowledge base of practical multimedia resources for farmers, ranchers, and educators.
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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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A brown, dying shrub in front of a row of healthy green shrubs.
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Wilted plants: lack of water or disease?

February 4th, 2025
By Belinda Messenger-Sikes
A well-watered plant that suddenly wilts or unexpectedly drops its leaves could be infected with the soil pathogen Phytophthora. The disease it causes, Phytophthora root and crown rot, can affect many plants, including ornamental trees and shrubs, fruit trees, and vegetables.
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A cluster of leaves on a branch. Some are flat and green and others are bumpy and red.
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When Should You Treat for Peach Leaf Curl?

November 25th, 2024
By Lauren Fordyce
While you may not notice symptoms of peach leaf curl until the spring, you should manage it in the fall and winter. Peach leaf curl is a fungal disease that primarily affects peach and nectarine trees.
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