University of California
UCCE Orange County Master Gardeners

Testing

What's That Beetle in My Roses?

Adult hoplia beetle and feeding damage. [J.K.Clark]

If you grow roses, you might be noticing damage on the flowers caused by hoplia beetles (Hoplia callipyge). Hoplia beetles, which are common between March and May, especially in the Central Valley, feed on the blossoms of light-colored roses and other...

Posted on Monday, April 24, 2017 at 11:48 AM
Tags: beetle (8), bug (4), chafer (3), grubs (5), hoplia (2), Japanese (2), management (11), nonchemical (1), pests (35), petal (1), rose (1), roses (1), UC IPM (61)

Make Earth Day Every Day - Use IPM!

Gardens can be beautiful using IPM. [E. Zagory]

Every April, we celebrate Earth Day and think about ways we can help make our planet healthier. One way to do this is to use IPM or integrated pest management to deal with pests around your home and garden! IPM is a science-based, environmentally sound...

Posted on Friday, April 21, 2017 at 10:35 PM
Tags: April (1), beneficial (4), Earth Day (1), environment (2), health. (1), integrated pest management (3), IPM (43), pesticides (13), pests (35), science (1), UC IPM (61)

Mosquito and West Nile Virus Awareness Week

Culex mosquito biting through human skin. [J.K. Clark]

April 16-22 has been declared West Nile Virus and Mosquito Vector Control Awareness week by the California State Legislature. West Nile virus (WNV) is a mosquito-borne disease that was originally found in Africa. It was first detected in the eastern U.S....

Posted on Monday, April 17, 2017 at 4:44 PM
Tags: awareness (6), bite (4), mosquito (11), pests (35), prevention. (1), repellent (4), UC IPM (61), vector control (1), west nile virus (3)

Widow Spiders Information Updated

Underside of adult black widow spider. [J.K.Clark]

The black widow spider is known and feared by many people due to its venomous bite. However, in the past decade in California, a change in widow spider populations has occurred. A newer invasive spider called the brown widow may be displacing black widow...

Posted on Monday, April 17, 2017 at 10:17 AM
Tags: bite (4), black widow (2), brown (1), California (12), pest note (3), spider (3), UC IPM (61), venomous (1), Vetter (1)

Huanglongbing Detections in Urban Southern California

Asymmetrical yellow mottling of citrus leaves and greening of fruit, symptoms of Huanglongbing. [E. Grafton-Cardwell]

The following press release was distributed on April 13, 2017 by the Citrus Pest & Disease Prevention Program. Huanglongbing was confirmed in a single citrus tree in the City of La Habra in Orange County on April 11. This new find will result in a...

Posted on Thursday, April 13, 2017 at 9:45 AM

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