Since earlier in the year, Oregon State University eCampus has been offering an online course for nursery growers on the management of Phytophthora, a genus of pathogens including the notorious P. ramorum, also known as sudden oak death. The course is free and available to anyone, and participants can try for a certificate of mastery […]
Out-of-state firewood: bad
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Oregon residents are being asked to make sure that if they purchase firewood, that it comes from Oregon. According to Dan Hilburn, administrator of the Oregon Department of Agriculture Plant Division, that’s because firewood often allows diseases and invasive species to hitchhike to new locales, endangering trees and nursery stocks in whole new areas. Officials […]
Kousa dogwood IDd as P. ramorum host
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USDA APHIS officials indicate they are planning to add the Kousa dogwood, Cornus kousa, to the list of plants that have been identified as hosts for Phytophthora ramorum, the destructive plant pathogen that’s also known as sudden oak death. The species of dogwood will now come under federal regulations designed to combat the spread of […]