The following is a list of tree care professio nals
who have been through a COMTF training session on symptom recognition/sampling and the use of the Agri-fos/Pentra-bark treatment, and have given their names and contact information for this referral list. These persons have been trained to recognize Phytophthora ramorum in the field, and have been informed
of the process for collecting and sending samples for analysis with the California Department of Agriculture. Note:These lists should be viewed as a resource only, and are not an endorsement by the Task Force of any specific company or service. Referrals are listed by state and county. Please note that while a person may be listed in a particular county, most professionals work
much further afield than that. If you are unable to find someone in your immediate area, try contacts in the neighboring counties as well. If you are a professional who has been through a training session and indicated that you wished to be listed, but do not see your name on these pages, please contact Janice Alexander at 415/499-3041, or email at jalexander@ucdavis.edu. Once we have your complete
contact information, you will be added to the list. PDF files: Alameda Amador Butte Calaveras Colusa
Contra Costa El Dorado Glenn Humboldt Lake Marin Mendocino Merced Monterey Napa Nevada Placer Sacramento San Benito San Francisco San Mateo
San Joaquin San Luis Obispo Santa Barbara Santa Clara Santa Cruz Shasta Siskiyou Solano Sonoma Stanislaus Sutter Tehama Tuolumne Ventura Yolo Yuba Oregon State
Washington State | 
