Ongoing research

UC Master Gardener Program of Contra Costa County: Article

Guide to Growing Tomatoes - Common Tomato Disorders

April 18, 2026
By UC Master Gardener Program of Contra Costa County
Tomato Growing Tips (Part 2 of 2)Here are some of the more common tomato disorders that result from nonliving (abiotic) causes often attributable to environmental or cultural factors, or simply to the plant’s genetic makeup. ProblemsBlossoms fall off, plant fails to set fruit.Probable causes: Night…
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Urban treescape

Planting for the Future - Selecting Trees for Climate Change

April 18, 2026
By Gail Pavlosky, UC Master Gardener of Napa County.Urban trees provide shade, improve air quality and help moderate temperatures in California’s cities. Yet as climate change brings hotter weather and longer periods of drought, many commonly planted tree species may struggle.  In a recent lecture, Dr…
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UC Master Gardeners of Tulare and Kings County: Article

Nutsedge or Nutgrass Can Drive You Nutty!

April 18, 2026
By Rosie Bonar, UC Master Gardener of Tulare/Kings County
Nutsedge is a common weed that can be found in lawns, gardens, and flower beds of the Central Valley and throughout California. It is sometimes referred to as nut grass, although it is not a grass. The saying "sedges have edges" will help you differentiate between a grass and a sedge. Description …
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Spring wildflowers in grassland and oak tree
Hopland Research and Extension Center: Event

Workshop: Identifying and Appreciating the Native and Naturalized Grasses of California

Event Date
May 29, 2026

This class is now full.Grasses are Fun and Challenging to Identify!Build your skills:Understand California’s grassland ecologyFamiliarize yourself with grass-specific terminologyIdentify grasses by using the Jepson eFlora dichotomous keyRecognize the basic groups and common speciesBuild a “collection” of…
Hopland Research and Extension Center
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Shovel with the shovelhead buried in dirt.
UC Master Gardeners of Tuolumne County: Article

Digging for Gold in Tuolumne County

April 18, 2026
Shopping for a new home is exciting. More square footage, bedrooms, baths, a huge kitchen, nicer appliances, and floor coverings will add to your family’s comfort. However, there is something very important that has been forgotten, the Shovel Test.What is the shovel test? There are inspections, forms,…
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UC Master Gardener Coordinators: Article

Coordinators Monthly Newsletter - April 2026

April 17, 2026
By Barbra Braaten
This month's coordinator newsletter features a program spotlight on award-winning projects from the Search for Excellence, a resource spotlight on accessibility, and a training spotlight on statewide evaluation. We also highlight upcoming trainings and events in the "What's Happening" section. Read the April…
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Water moving through soil
Topics in Subtropics: Article

LEACH! Avocados and Most Coastal Crops Affected By Salt

April 17, 2026
By Ben A Faber
High value coastal crops are prone to salt damage from salts in well waters, and in low rainfall years they are especially so. Avocado is especially prone to salt damage.  And the flowering period is one of the most sensitive.   Flowers are competing with leaves that have been hanging on for a…
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UC Master Gardener Coordinators: Article

Coordinators Monthly Newsletter - March 2026

April 17, 2026
By Barbra Braaten
This month’s coordinator newsletter features a program spotlight on Lake County Tribal Health, a resource spotlight on plant sales and payment processing, and a training spotlight on avoiding conflict of interest. We also highlight upcoming trainings and events in the “What’s Happening” section. …
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Single celled ciliate

Don't Miss the Wetlands Restoration Exhibit

April 17, 2026
By Kathy Keatley Garvey
 Don't miss this new exhibit at Briggs Hall during the 112th annual UC Davis Picnic Day on Saturday April 18.The exhibit, scheduled from 9 a.m. to 5 p.m., will feature the wetlands restoration project of medical entomologist-geneticist Geoffrey Attardo, associate professor, UC Davis Department of…
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rattlesnake ready to strike
Topics in Subtropics: Article

Rattlesnake Season

April 17, 2026
By Ben A Faber
First, remember that the desire to avoid any kind of an interaction is mutual. Rattlesnakes are an important part of the ecosystem, feeding on rodents, birds, and other small animals.Snake season in Southern California runs from April through October, but the warmer the weather, the more the reptiles are…
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