UCCE Master Gardeners of San Joaquin County
University of California
UCCE Master Gardeners of San Joaquin County

Posts Tagged: black widow

Summer Spider Sightings

Adult flower or crab spider. (Credit: Jack Kelly Clark)

When you see spiders in your garden, you may wonder if they can hurt you or your pets. The good news is, most spiders are not likely to bite or cause lasting harm if they do. Plus, they provide natural pest control! Here are a few spiders commonly found...

Posted on Sunday, July 8, 2018 at 9:27 PM
Tags: black widow (3), control (41), crab (1), garden (46), harmless (1), jumping (1), lynx (1), orb (1), pest (74), poisonous (2), spider (22), UC IPM (223), weaver (1), webs (2), wolf (1)
Focus Area Tags: Pest Management Yard & Garden

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 (10), black widow (3), brown (2), California (28), pest note (3), spider (22), UC IPM (223), venomous (1), Vetter (3)

Brown Widows Get Foothold in Southern California

Figure 2. A mature adult female brown widow spider showing mottling. (R. Vetter)

[From the February 2013 issue of the UC IPM Green Bulletin newsletter] During the last 10 years, a new widow spider has moved into parts of Southern California. The brown widow spider, Latrodectus geo­metricus, is closely related to the well-known...

Posted on Tuesday, April 22, 2014 at 1:31 PM
Tags: black widow (3), brown widow (1), spider (22)
Webmaster Email: mdhachman@ucdavis.edu