Ensure Canyon Trees are Healthy!
Chaparral Tree Health Information
Native Trees create a healthy ecosystem. Learn how to take care of your trees and check out the links below.
Many local trees, Sycamore, Oak, and Willow as well as ornamental trees like Japanese Maple, Avocado and more are being killed by the Polyphagous Shot Hole Borer and other pathogens.
This PDF has lots of great information for residents on tree and pest identification. These books show various tree maladies and help identify them.
For tree pruning and health tips to keep pathogens from spreading, this PDF has tool cleaning and pruning tips: Tree care -BMP
Golden Spotted Oak Borer or GSOB is another pest. Learn how to identify:
GSOB Tree care, watering and year-round tree health.
This video by Bea Norbua-Behrmann shows a shot hole borer on a sycamore in Weir canyon.
OCFA news release on Invasive Tree Pests
Miscellaneous Information:
Invasive Shot Hole Borer is a real danger to the Southern California landscape. This disease and insect may kill many Oak, Sycamore and other trees in our area. Please do not move firewood and click on this link to learn more.
Do you think the issue is far away? We have these killing pests in Trabuco, Modjeska and Silverado Canyons. Check out these maps from OC parks of trees mapped in Modjeska Canyon and the Modjeska home.
What Can I Do?
Maintain tree health & avoid injury to native trees located on your property. Follow appropriate cultural management practices for irrigation, mulching, pruning, etc.
Dispose of infested wood and green waste per the best management practices on how to dispose of infested material found at www.pshb.org and www.gsob.org.
Learn to identify the signs and symptoms of PSHB and GSOB infested trees and report suspect trees using the field identification guides and reporting instructions provided at www.pshb.org and www.gsob.org.
Have a certified arborist treat lightly infested trees or remove heavily infested trees.
Stay informed. Find out the latest news, make use of the resource materials and subscribe to the e-mail lists provided at www.pshb.org and www.gsob.org.
