Sudden Oak Death’s pathogen Phytophthora ramorum, causes foliar blight

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Presentation transcript:

Sudden Oak Death’s pathogen Phytophthora ramorum, causes foliar blight on nursery stock If you see these symptoms on… Camellias: Wet or “water-soaked” diseased areas Dark “halo” around diseased areas Rhododendrons: Diffused margins of diseased areas Often along mid-vein of leaves Pieris: Often at terminal tips of leaflets Twig die-back Poster and photos credits - Ken Peek, Alameda Co. Ag Commissioner's office (Jan 2008); APHIS P. ramorum Program, J Jones Program Manager (April 2009) Please contact your local Department of Agriculture office