Pests in the Urban Landscape

Squash bugs are a common pest in vegetable gardens, where they can be found on squash, pumpkin, and melon. They can cause leaves to become speckled and turn yellow. Heavy feeding can cause plants to wilt or die, and fruit to rot.These pests remain in the garden during the winter, hiding under dead leaves,…

Tree-of-heaven, Ailanthus altissima, was originally from China and became a popular landscape shade tree in the 1800’s. However, its rapid growth, aggressive spread, and native habitat disruption have made it a global problem. Reproducing rapidly through dense root suckers and wind dispersal of its “winged”…

Some indoor pests can just be a nuisance; others can also be a health risk. Did you know that cockroaches and rodents are known to trigger asthma symptoms and lead to the development of allergic asthma for some people? This month, we recognize Asthma Awareness Month and share how you can reduce indoor…

When you spot a plant in your garden that doesn’t look healthy, how do you figure out what’s wrong with it? Plant problems can be caused by insects, mites, vertebrates, environmental conditions, and diseases, but it can sometimes be hard to tell which is causing the problem. UC IPM's Plant Problem…

Dandelions can be an especially troublesome weed in lawns and landscapes. Once they're established, dandelions readily regrow from their deep taproot when only the tops are removed or mowed. Dandelions can regrow if even 1 inch of the taproot remains. The best way to get rid of dandelions is to control them…