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Spider Bites

The black widow spider is the most harmful spider in California. (Photo: Jack Kelly Clark)

Unlike mosquitoes, spiders do not seek people in order to bite them. Generally, a spider doesn't try to bite a person unless it has been squeezed, lain on, or similarly provoked to defend itself. Moreover, the jaws of most spiders are so small that the...

Posted on Monday, January 22, 2018 at 8:50 AM
Tags: bite (6), Pest Notes (45), spider (5), UC IPM (107), venom (1), Vetter (2)
Focus Area Tags: Pest Management Yard & Garden

Still Seeing Aphids on Your Plants?

Rose aphids infesting a blossom. (Photo: Jack Kelly Clark)

Are you surprised to see aphids on some of your plants this time of year? With the current mild temperatures in California, aphids may continue living and reproducing in some locations this winter, with female adults giving birth to live young every...

Posted on Wednesday, January 17, 2018 at 9:10 AM
Tags: aphids (5), management (15), pests (42), UC IPM (107), winter (6)

Webinar on Healthier Homes and Communities - 01/23

A small flashlight is used to inspect underneath a kitchen sink for ants and ant entry points.  (Photo: Cheryl A. Reynolds)

Register for the U.S. EPA Webinar: It Takes an Integrated Pest Management Village - IPM for a Healthier Home and Community Date: Tuesday, January 23, 2018Time: 2:00 – 3:00 p.m. ET (11:00 a.m. – 12:00 p.m. PT), Followed by a live...

Posted on Thursday, January 11, 2018 at 11:52 AM
Tags: community (1), control (21), health (1), healthy (2), home (2), IPM (46), pest (44), US EPA (1), webinar (1)

Redhumped Caterpillar Publication Revised

Two redhumped caterpillar larvae on a plum branch. (Photo: Belinda Messenger-Sikes)

The redhumped caterpillar is a familiar pest on fruit and nut trees such as plum, almond, cherry, and apple, as well as on ornamental trees like liquidambar and birch. It can reach high populations in California's Central Valley, sometimes defoliating...

Posted on Tuesday, January 9, 2018 at 6:08 PM
Tags: defoliate (1), Dreistadt (3), pest (44), Pest Notes (45), redhumped caterpillar (1), Symmes (1), tree (11), UC IPM (107)
Focus Area Tags: Pest Management Yard & Garden

Time to Treat for Peach Leaf Curl?

Peach leaves deformed by peach leaf curl. (Photo: Jack Kelly Clark)

Peach leaf curl is a disease that affects peach and nectarine trees. Although you may not see symptoms right now in the dormant season in California, it's time to think about treatment, especially if your tree had the disease last year. Symptoms of...

Posted on Monday, January 8, 2018 at 11:41 AM
Tags: control (21), disease (20), fungus (4), leaf curl (3), nectarine (2), peach (2), symptoms (2), treatment (3), UC IPM (107)
Focus Area Tags: Pest Management Yard & Garden

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