MEETING PLACE CHANGED! Due to possible severe weather conditions, the location of this week’s chapter meeting has been relocated to IRWD headquarters at 15600 Sand Canyon Avenue, Irvine.

Directions: IRWD headquarters is located between Barranca Parkway and Irvine Center Drive on Sand Canyon Avenue on the south side. From the I5 or I405, exit at Sand Canyon. From the 5 head west, from the 405 head east. Parking is to the side and rear of the building. The meeting place will be clearly indicated.

Two Devastating Pests in Orange County Wildlands and Urban Forests.

Speaker: John Kabashima

Date: February 16, 2017 (doors open 6:45 pm, Speaker at 7:30 pm)

Location: Duck Club, Irvine (Directions) see above!

Thousands of trees across Southern California are dying because of invasive beetles. There are currently no remedies. The polyphagous shot hole borer (PSHB) is attacking some of the trees most favored by gardeners, city landscape designers, and universities—maples, elders, cottonwoods, sycamores, walnut, and oaks. Obviously many of our wildland trees are included. Add to this the goldspotted oak borer, originally from southeast Arizona. Already rampant across San Diego County where it was discovered in 2008, it soon made its way to coastal San Diego County and then Orange County in 2014. In 2015, it showed up in northeast Los Angeles County.

What is being done to understand these two insects and how to control them? What is the eventual damage likely to be? What can we do individually? Dr. Kabashima, one of Orange County’s leading experts on these pests, will provide a thorough update.

A native of Los Angeles, John Kabashima started working in his family's nursery business as soon as he was tall enough to water 1-gallon nursery plants. He received his bachelor’s degree in agricultural biology from Cal Poly Pomona, master’s degree in pest management from UC Riverside, an MBA from Pepperdine University, and a doctorate in Entomology from UC Riverside.

Dr. Kabashima retired after 28 years with University of California Agriculture and Natural Resources, having run the UC Master Gardener Program in Orange County, serving as the UC Cooperative Extension environmental horticulture advisorfor OC, and in many other posts. His cutting edge research on invasive species such as the red imported fire ant, the glassy winged sharp shooter, lerp psyllid, and ash whitefly has led to effective management plans. He retains emeritus status conducting further research on both the polyphagus shot hole borer and the goldspotted oak borer and other invasive pests.

John’s achievements in education and research have been recognized by various organizations and in 2014, he and his friend Gary Hayakawa were inducted into the Green Industry Hall of Fame.

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