What are the symptoms of powdery mildew on Japanese euonymus?
Symptoms of powdery mildew on Japanese euonymus: the white powder is mostly distributed on the upper surface of the leaves of Japanese euonymus, and also grows on the underside of the leaves. Individual lesions are round and white, and after the lesions expand and merge with each other they become irregular. When the white powdery mycelium and spore layer on the surface are wiped off, the original diseased site appears as a yellow round spot. In severe cases, up to 100% of new shoots can be infected. Sometimes diseased leaves become shrunken, and diseased shoots become twisted, deformed and stunted.
Symptoms of powdery mildew on Japanese euonymus: the white powder is mostly distributed on the upper surface of the leaves of Japanese euonymus, and also grows on the underside of the leaves. Individual lesions are round and white, and after the lesions expand and merge with each other they become irregular. When the white powdery mycelium and spore layer on the surface are wiped off, the original diseased site appears as a yellow round spot. In severe cases, up to 100% of new shoots can be infected. Sometimes diseased leaves become shrunken, and diseased shoots become twisted, deformed and stunted.