The UCCE Master Gardeners of Sutter-Yuba Counties welcome you!
Who are we?
UCCE Master Gardeners are trained representatives of the University of California Cooperative Extension. We assist the gardening community of Sutter and Yuba Counties by providing research-based home gardening information.
Office: Cooperative Extension of Sutter-Yuba Counties
142A Garden Highway
Yuba City, CA 95991-5512
Phone: (530) 822-7515
Find us on Facebook: https://www.facebook.com/sutteryubamg
Our office hours are Tuesday, 9:00 am to noon and Thursday, 1:00 to 4:00 pm at the Cooperative Extension office. See us Saturdays at the Yuba City Farmers' Market, Plumas Center Fountain, from 8:00 am to noon from May through October, 2017.
Ask us! We are here to help if you have gardening questions, want to identify a plant or animal, or just want to know more about us. Click How to Submit a Sample to learn how to package a plant or animal for identification.
2017 Gardening Workshops
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Hot August Mites!
Mites are common pests in landscapes and gardens that feed on many fruit trees, vines, berries, vegetables, and ornamental plants. Webspinning spider mites include the Pacific spider mite, twospotted spider mite, strawberry spider mite, and several other species.
Mites cause damage by sucking cell contents from leaves. A small number of mites usually isn’t reason for concern, but very high populations—levels high enough to show visible damage to leaves—can damage plants, especially herbaceous ones. At first, the damage shows up as a stippling of light dots on the leaves; sometimes the leaves take on a bronze color. As feeding continues, the leaves turn yellowish or reddish and drop off. Often, large amounts of webbing cover leaves, twigs, and fruit. Damage is usually worse when compounded by water stress.
Spider mites have many natural enemies that often limit populations. Adequate irrigation is important, because water-stressed plants are most likely to be damaged. Broad-spectrum insecticide treatments for other pests frequently cause mite outbreaks, so avoid these pesticides when possible. Sprays of water, insecticidal oils, or soaps can be used for management.