Catalpa  - Disease information and Management Recommendations.

HOST PLANT DISEASE SYMPTOMS MANAGEMENT Catalpa Catalpa spp. Verticillium wilt  Verticillium dahlia Acute or chronic symptoms may appear anytime during the growing season. Chronic: small, chlorotic leaves, leaf scorch, slow growth, abnormally heavy seed crop, shoot dieback. Acute: leaf curling or scorching, abnormal red or yellow color, partial defoliation, wilting, and branch dieback, plant death. Symptoms often on only one part of the tree or shrub. This wilt is soilborne; replace with resistant tree species. Keep infected trees well watered and fertilize with a fertilizer high in potassium. Remove dead branches. CHEMICAL: None. REFERENCE: Verticillium Wilt of Trees and Shrubs

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