Pests And Weeds

Text reads "Pest Tips for July". In the background you see a picture of a summer garden, abundant with flowers and fruit trees.

July Pest Management Tips

July 1, 2026
By Yulie Velez
Summer is in full force and while it's been quite hot in many parts of California, it's been very cool in others. That's why UC IPM's Seasonal Landscape IPM Checklist is a useful tool to help you figure out what to do in your region each month! Here are some general tips for keeping your landscape…
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UC Master Gardeners of El Dorado County: Article

Central Sierra: Don't Plant a Pest

June 16, 2026
Protect your environment from invasive plants Pests in the garden are not always creepy crawlers, they can also be plants, and some are very attractive. However, attractiveness does not always mean good, and you may be surprised to learn that some plants in your landscape should not be present at all…
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Four sections showcasing tools for pest management and identification with corresponding images. Transcribed Text reads: Plant Problem Diagnostic Tool: Identify 650+ plant pests, diseases, and abiotic problems across 300+ species by narrowing down issues by plant and affected part. Seasonal Landscape IPM Checklist: A monthly IPM checklist helping landscape professionals and gardeners manage common ornamental and fruit tree plant pests with a list of actions. Wildlife Pest Identification Tool: Identify Calif

UC IPM Tools are Back Online!

June 15, 2026
By Yulie Velez
Last month, we shared on our blog that UC IPM's website was undergoing changes to redesign and update the content to improve not only the overall look, but accessibility for those with disabilities to be in compliance with Title II of the Americans with Disabilities Act (ADA).   We also…
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A close-up of a California burclover plant showing deep green compound leaves with 3 leaflets, small yellow flowers, and green, round, spiny seeds.
Pests in the Urban Landscape: Article

Shamrocks, Clovers, or Weeds?

March 18, 2026
By Lindsey Hack
St. Patrick’s Day makes us think about shamrocks and all things green. With recent warm weather following winter rains, your lawn or garden might be dressing up for Saint Patrick’s Day and Spring with clovers and other weeds.  Clovers begin to germinate in the fall and continue throughout winter…
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Person wearing gloves pouring liquid from a measuring cup into a spray bottle on cement.
Pests in the Urban Landscape: Article

Upcoming Webinars from UC IPM

February 9, 2026
By Yulie Velez
If you missed our first Urban & Community IPM webinar of the year, Pests of Backyard Chickens, don’t fret, we have more for you! Join us every third Thursday of the month from 12:00pm to 1:00pm PT to learn about a wide range of urban pest management topics. This series is free and open to the…
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Several large, brilliant purple flowers scattered over dense, deep green leaves.
Pests in the Urban Landscape: Article

When Ornamentals Escape

January 20, 2026
By Cherie Shook
You might be surprised to learn that a few of your favorite ornamental plants are invasive to California and can “escape” your yard causing big problems in the wild. When plants escape landscape and garden boundaries, it is often due to seed distribution or aggressive roots. An invasive plant species can…
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UC Master Gardeners of Placer County: Article

Stopping Crabgrass Before It Starts

December 18, 2025
By Gay Wilhelm and Trish Grenfell, UC Master Gardeners of Placer County Q: What can I do to stop crab grass in my lawn? A: Who hasn’t done combat with crabgrass? But there is help and NOW is the time to take action. Using a pre-emergent herbicide in mid to late February will help…
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