Pests in the Urban Landscape
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Webinar: Mediterranean Oak Borer and Other Oak Pests

Join UC IPM for a free webinar on the invasive Mediterranean Oak Borer (MOB) and other important oak tree pests on April 10, 2025 from 6:00pm to 7:30pm. 

The Mediterranean Oak Borer (MOB) is an invasive ambrosia beetle that infests several species of white oaks in California: valley oak, blue oak, and Oregon oak. The beetle is spreading rapidly in Napa, Lake, Sonoma, and Sacramento Counties and has been detected in neighboring El Dorado, Yolo, and Mendocino Counties. There is considerable potential for the beetle's range to expand as they can be moved in infested wood and the females can fly. 

Mediterranean Oak Borer adults and dark-stained galleries on the wood of a valley oak.
Mediterranean oak borer adults and dark-stained beetle galleries on the wood of a valley oak. Photo by Curtis Ewing, CalFire.

This webinar will discuss MOB, other pests that can present signs and symptoms that look like MOB and introduce other significant invasive oak pests. Presenters include Curtis Ewing with CalFire and Mike Jones, UC Cooperative Extension Forestry Advisor in Mendocino, Lake and Sonoma Counties. We invite arborists, landscape professionals, Master Gardeners, and anyone else who may be interested in learning more about these pests and the threats they pose to California oak trees. 

Can’t join us live? A recording of this webinar will be posted to the UC IPM YouTube channel

Register here!