Phytophthora Foliar/Aerial Blight

Phytophthora Foliar/Aerial Blight

Causal Agent:

Phytophthora nicotianae, P. capsici, P. citricola, P. parasitica, P. ramorum

Susceptible Crops:

Affects all turfgrass, Anthurium, Azalea, Calibrachoa, Hosta, Lobelia, Petunia, Rhododendron, Spathipyllum, Vinca


  • Irregular brown spots develop on the leaves, often starting at the leaf margin
  • Dark brown lesions develop on the stem and petiole causing plants to wilt
  • White, fluffy sporulation can be observed under high infections