Colusa County
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Posts Tagged: CDFA

Seeing Japanese beetles in your California landscape? Not likely.

Japanese beetle (Credit: D. Cappaert,

Originally posted August 26, 2016; edited July 10, 2018 Have you seen big green beetles in your California yard or garden? Or beetles feeding on your roses or other plants? There are many kinds of beetles commonly found in our landscapes, but the...

Posted on Tuesday, July 10, 2018 at 10:00 PM
Tags: beetle (1), CDFA (14), chafer (1), green (1), grubs (1), hoplia (1), Japanese (1), June (1), lawn (1), pests (1), UCIPM (2)
Focus Area Tags: Pest Management Yard & Garden

Invasive Spotlight: Red Imported Fire Ant

Red imported fire ant. (Credit:

The red imported fire ant, or RIFA for short, is no ordinary red ant. This invasive pest lives up to its name, delivering a sting that causes a burning sensation when its venom is injected into the skin. People sometimes confuse RIFA with the native...

Posted on Friday, June 8, 2018 at 10:00 PM
Tags: bite (1), CDFA (14), invasive species (1), nurseries (1), pest (5), red imported fire ant (1), RIFA (1), southern California (1), sting (1), UC IPM (7), venom (1)
Focus Area Tags: Pest Management Yard & Garden

Third Backyard Citrus Tree with Huanglongbing Disease Found

Asymmetrical yellow mottling of citrus leaves and greening of fruit, symptoms of huanglongbing. (E. Grafton-Cardwell)

From the Citrus Pest & Disease Prevention Program RIVERSIDE – A third backyard citrus tree in the city of Riverside has tested positive for citrus greening, a deadly disease for citrus plants that can be transmitted from tree to tree by...

Posted on Tuesday, October 3, 2017 at 4:40 PM
Tags: Asian citrus psylld (2), CDFA (14), disease (2), greening. (1), huanglongbing (7), Riverside (1), UC IPM (7)

Recent Detection of Huanglongbing Disease in Riverside

Fig 1. Adults, nymphs, and wax of Asian  citrus psyllids. (M.E. Rogers)

[From the Summer issue of the UC IPM Retail Nursery & Garden Center News] The incurable citrus disease huanglongbing (HLB) has been detected in dozens of backyard trees in Los Angeles and Orange counties and most recently in Riverside. The...

Posted on Friday, July 28, 2017 at 1:20 PM

The Lady Beetle and the Syrphid Fly

A large syrphid fly, Scaeva pyrastri (as identified by Martin Hauser of the California Department of Food and Agriculture), heads for a lady beetle. (Photo by Kathy Keatley Garvey)

So, here I am, an Asian lady beetle (Harmonia axyridis) perched on a rose bush in Vacaville, Calif., as dawn breaks. I'm eating  aphids and minding my own beetle business, which consists of gobbling aphids and more aphids. And more aphids. Did I say...

Posted on Tuesday, June 6, 2017 at 4:38 PM

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