First Report of <i>Phytophthora cambivora</i> on Hybrid Rhododendron in North Carolina

Fig. 4. Shoot dieback of older leaves and stem of rhododendron cv. Roseum Elegans 13 days after inoculation with Phytophthora cambivora. Note the necrosis that has progressed down the stem and into the petioles of attached leaves forming a ‘V-shaped’ pattern of discoloration in the infected leaf.



Image from Plant Health Progress article:
First Report of Phytophthora cambivora on Hybrid Rhododendron in North Carolina