Rake and destroy fallen leaves. Avoid overhead irrigation. Apply triadimefon, thiophanate methyl, chlorothalonil, myclobutanil, or mancozeb to protect leaves before infection in the spring. Cylindrocladium Blight Plants die rapidly. Leaves turn brown to black and fall in 3-4 days.
Stems have brown spots on which white masses of spores form later.
Or roots die and plants wilt without having leaf spots form. Cylindrocladium scoparium Pot and propagate in pasteurized media. Do not reuse propagation media. Use clean, disinfested tools. Discard infected plants.