Garden Troubleshooting

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UC Marin Master Gardeners: Page

Care

Gardens are always changing: plants grow, soils change, leaves fall, and weeds sprout. All plants, whether in your garden or in your home, need consistent maintenance and care.
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UC Master Gardeners of Merced County: Page

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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UC Master Gardeners of Placer County: Page

About Master Gardeners

About Master Gardeners Our mission as University of California Master Gardener volunteers is to extend research-based sustainable gardening and composting information to the public through various educational outreach methods. We strive to present accurate, impartial information to local gardeners so they…
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UC Master Gardeners of Central Sierra: Page

Central Sierra | Master Gardeners | Becoming a UC Master Gardener

Select your county, below on the right, to get more information on applying to their Master Gardener training program. Contribute to your community every year Master Gardeners contribute several thousand hours of volunteer service educating our communities about sustainable gardening.
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UC Marin Master Gardeners: Page

Weeds & Invasive Plants

Lambert Yuri, Unsplash > Types of weeds > Life cycle of weeds > How to identify weeds > Managing weeds > What to do when you already have weeds > What you should know about weedkillers > How to prevent weeds Weeds are generally defined as any plant growing in a place where you dont want it, or a pla...
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UC Master Gardeners of Merced County: Page

Become a Master Gardener!

The application process for the UC Master Gardeners of Merced County's 2026 Training Class is now open. 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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UC Master Gardeners of Amador County: Page

Central Sierra: Amador County | Master Gardener | Classes & Events

UC Master Gardeners of Amador County's ClassesUC Master Gardeners offer free classes on various gardening topics throughout the year.  Check our calendar for upcoming classes each month. Calendar of EventsFor more information contact the Master Gardeners 10am to noon, Tuesdays,…
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UCCE Humboldt - Del Norte Counties: Page

Invasive Plant Species

Invasive plants are one of the greatest threats to croplands, rangelands, aquatic areas, and wildlands in the United States; they degrade the productivity and biological diversity of all ecosystems. Below are the sixteen most harmful weeds in Humboldt County.
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UC Master Gardeners of Merced County: Page

Support UC Master Gardener Program of Merced County

Donate to the UC Master Gardener Program in Merced County, which provides information to the public on home gardening, pest management, and sustainable landscaping practices to Merced county residents through: Monthly free workshops to the community, Free individual advice through our Help Line, Information…
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