1. 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