[Originally published in the Fall 2018 issue of the Green Bulletin. Modified slightly from original.]
Invasive insects and diseases are threatening numerous tree species throughout the country. Impacts include tree mortality, destruction of forest and urban habitats, and other significant changes in forest ecosystems due to the decline or elimination of tree species. Many of these pests can be transported in inadequately-processed wood, including firewood and discarded wood debris left behind from tree care operations (Figure 1). Preventing the spread of these pests to new areas is critical for.../span>
[From the Summer issue of the UC IPM Retail Nursery & Garden Center News]
When you use firewood in the great outdoors, be aware that moving firewood can transport tree-killing insects and diseases. Find out more at the following resources:
- Author: Tunyalee A. Martin
During California Invasive Species Action Week (June 2 – June 10), we highlighted several pests, but there are many more invasive species out there. Now that you know about them, share your knowledge of invasive species with others. And no matter what your summer plans, here are some things YOU can do about invasive species from the California Department of Fish and Wildlife and California Department of Food and Agriculture.
YOU: I'M TRAVELING TO AMAZING PLACES
- Learn what plants and animals you can bring into California.
Shot hole borers are tiny insects the size of a sesame seed that don't look particularly harmful, but don't let their diminutive size fool you. Two of these borers are invasive—the polyphagous shot hole borer and the Kuroshio shot hole borer. They carry pathogens and are spreading them throughout southern California. Together, the borers and the fungi are a deadly combination that are killing many trees. Trees affected include avocado, sycamore, white alder, box elder, cottonwood, and willow.
The two shot hole borers are nearly identical in appearance, and both have a symbiotic relationship with several pathogenic fungi. The female borers lay eggs which introduces fungi into trees. The fungi grow and provide food for...
It's National Invasive Species Week (February 27-March 3), which may prompt the question, “what exactly is an invasive species?” A truly invasive species is a non-native plant, animal or pathogen that causes or may cause economic problems, or threaten the environment or human health.
Why should this matter to you? Every 60 days, our state gains a new and potentially damaging invasive species. Because the things you do can directly impact the environment and economy of California, here are the top 10 ways:
- Learn about the invasive species that live in your region. Check with your county agricultural extension...