Tree & Shrub Care

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Under Oaks

Coast live oak trees (Quercus agrifolia) like wet winters and dry summers. L. Stiles There are 20 oak trees native to California. These stately trees create iconic landscapes, live up to 400 years, and provide tremendous benefits. Oaks are good investments -- for homeowners and the environment.
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pruning shears
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Pruning Trees & Shrubs

Hydrangea. Photo: Annie Spratt, Unsplash This section covers flowering trees and shrubs that have been introduced to Marin and other California counties as a result of European contact. These tend to enter dormancy when days shorten and temperatures cool.
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Become a Master Gardener!

The application process for the UC Master Gardeners of Merced County's 2026 Training Class will open in fall 2025. Any Merced County adult resident with an interest in horticulture (plants, lawns, trees, vegetables and more) and public service are encouraged to apply for the Master Gardener Program.
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Request a Speaker

Are you looking for a Speaker for your next community group meeting? The Master Gardeners of Merced County Speakers Bureau is a collection of expert speakers who offer workshops and talks about a variety of topics to Merced County service organizations, garden clubs or government entities.
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Central Sierra: El Dorado County | Master Gardener | Orchard Garden

The Sherwood Demo Garden is comprised of 16 individual gardens. The Orchard Garden is currently made up of 25 fruit trees consisting of Pome, Stone, Citrus, and more. One of the educational goals of the Orchard Garden is to demonstrate pruning (fall and summer), fall and winter dormant spraying, fruit…
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A dark haired woman holds a pesticide bottle in her hand to read it.
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Tree & Shrub Insecticides Limited in New Law

February 11th, 2025
By Lauren Fordyce
As of January 1, 2025, popular lawn and garden pesticides belonging to the neonicotinoid class, can no longer be used by home gardeners on outdoor fruit trees, lawns, or ornamental plants in California.
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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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