Meeting Information

Urban Forest Pests: New and Old Enemies - SOLD OUT

***This meeting is SOLD OUT*** - No at the door registration will be taken.

Date & Time:

Thursday, March 6th, 2014 / 9:00 am - 4:30 pm


Several new troubling urban forest pests are spreading in Southern California: Polyphagous shot hole borer (PSHB) and the Goldspotted oak borer (GSOB) and others. With broad host lists and dramatic damage they threaten Bay Area urban forests. Arborists are often the first detectors and responders to new urban tree pests. This workshop presents the latest information on how to recognize and manage these threats. Scientists and arborists from Southern and Northern California will present first-hand experience of urban tree pests on hardwoods, conifers, palms and citrus. New techniques for pest diagnosis and hazard tree assessment will be presented and participants will receive a newly published sudden oak death management guide. This workshop will enhance your knowledge and skills while connecting you with a coalition of arborists sustaining Bay Area urban forests.


USDA Forest Service, Pacific Southwest Research Station


9:00 am Registration
9:30 am Why are we Concerned About Urban Forest Health?
Susan Frankel, Plant Pathologist, USDA Forest Service, Pacific Southwest Research Station, Albany, CA
New Threats to the Urban Forest
Moderator: Greg McPherson, Researcher, Urban Ecosystems and Social Dynamics Program, USDA Forest Service Pacific Southwest Research Station, Davis, CA
9:45 am Polyphagous Shot Hole Borer/Fusarium Dieback an Invasive Beetle/Disease Complex Threatening Agricultural and Natural Landscape Trees in California
Akif Eskalen, Department of Plant Pathology and Microbiology, University of California Riverside, Riverside, CA
10:15 am Goldspotted Oak Borer: Could it become established in Northern California?
Tom Coleman, Forest Entomologist, USDA Forest Service, Forest Health Protection, San Bernardino, CA
10:45 am Break
11:00 am Thousand Cankers and Walnut Twig Beetle
Steven Seybold, Research Entomologist, USDA Forest Service Pacific Southwest Research Station, Davis, CA
11:20 am Impacts of Poor Growing Conditions on Health and Safety of Trees
John Henry McClenahan, S.P. McClenahan Ca. Inc, Portola Valley, CA
11:45 am Diseases of Landscape Palms
Michael Santos, HortScience, Inc., Pleasanton, CA
12:30 pm Lunch, (Provided)
1:30 pm Citrus Landscape Pests and Laurel Wilt
Cheryl Blomquist, Senior Plant Pathologist, California Department of Food and Agriculture Plant Pest Diagnostics Center, Sacramento, CA
2:00 pm
Arborists Reported Issues – Getting to the Root of the Problem
Suzanne Rooney Latham, Senior Plant Pathologist, California Department of Food and Agriculture Plant Diagnostics Center, Sacramento, CA
Managing Current Urban Forest Pests
Moderator: Nancy Hughes, Executive Director, California Urban Forests Council (CaUFC), Novato, Ca
2:20 pm
Neonicotinoids: Why we use them, why we should be careful.
Mary Louise Flint, Ph.D, Associate Director: Urban & Community IPM, UC Statewide IPM Program and Extension Entomologist, Department of Entomology U.C. Davis, Davis, CA
2:40 pm
Factoring Decay into Hazard Tree Evaluation
Matteo Garbelotto, Director, UC Berkeley Forest Pathology and Mycology Laboratory, Statewide UC Forest Pathology Extension Specialist, Berkeley, CA
3:15 pm
A Reference Manual for Managing Sudden Oak Death in California
Ted Swiecki, Phytosphere Research, Vacaville, CA
3:45 pm
Managing Insects and Pathogens in the Urban Forest – Facilitated Discussion
Steven Swain, Environmental Horticulture Advisor, UC Cooperative Extension Marin & Sonoma Counties and Janice Alexander, Education and Outreach Specialist, UC Cooperative Extension Marin County
4:30 pm CEU Sign Out
*Please allow up to 6 weeks for processing of CEUs


Early Registration (until midnight on 2/25/2014):

$80.00 - WCISA Member
$105.00 - Non-WCISA Member

Regular Registration (on or after 2/25/2014):

$105.00 - WCISA Member
$130.00 - Non-WCISA Member

Student Senior:

$55.00 - Please call office to register 866.785.8960. Must be a WCISA Member.


DPR - Applied for


Finley Community Center
2060 W. College Ave.
Santa Rosa, CA 95401 

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