How do you get rid of powdery mildew on impatiens?
How do you get rid of powdery mildew on impatiens? obducens to overwinter in a garden. If you see impatiens downy mildew, remove symptomatic plants (roots and all), place them in sealed plastic bags and throw them away in the garbage; DO NOT compost these plants. Also consider removing all impatiens within a three foot radius of symptomatic plants. What can I spray to prevent powdery mildew? Neem oil can be used to prevent powdery mildew, if the disease has been a problem in the garden during previous seasons. Neem is an effective control, if applied at the first symptoms,...