Tumbleweeds rolling across the landscape may make you think of classic old Western movies, but tumbleweeds, or Russian thistle, is more common today than you might think. This invasive plant can grow anywhere the soil is disturbed and once it matures, it breaks off its stem and the dried plant blows across…
The invasive goldspotted oak borer has spread across SoCal, leaving boneyards of dead trees behind. This June, UC ANR and community partners launched an effort to track this pest.
This week, we shared information about important invasive species, what to do if you find them, and how you can help prevent their spread. To wrap up California Invasive Species Action Week, we’d like to highlight a few key takeaways: Don’t pack or plant a pest Whether you’re traveling or gardening…
You may not see them, but small hitchhikers can cling to your boats, trailers, fishing gear, kayaks, and paddleboards. These hitchhikers are aquatic invasive species like plants, fish, and mussels. Once introduced to a body of water, they can displace native species, clog motors, damage water delivery…
While bringing firewood from home for your weekend camping trip may seem harmless, many invasive pests can hide in firewood and cause serious harm to California’s forests and urban landscapes. You can help limit the spread of these unwanted hitchhikers by collecting or buying firewood close to where you plan…
Be on the lookout for invasive species threatening California! While state and federal agencies actively monitor for new invasive pests, the public serves a critical role in early detection and often are the ones who find new invasive species first. During California Invasive Species Action Week …
Invasive species. What does that mean? Invasive species are non-native pests that harm California’s natural areas, public health, and economy. To raise awareness about these pests, UC IPM joins other state agencies to promote the annual California Invasive Species Action Week (CISAW), which goes from June 7…
Tiny but destructive, the emerald ash borer (EAB) is an invasive beetle that has killed millions of ash trees across North America. In some cases, infested regions have lost nearly 100% of their ash trees to this pest. Though EAB has not yet been found in California, it was detected on the West Coast for the…
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”…
