I had inpatients that were planted in a container that got powdery mildew....

Asked October 27, 2014, 5:06 PM EDT

I had inpatients that were planted in a container that got powdery mildew. How should I dispose of the plants and the soil?

Dakota County Minnesota

1 Response

New Guinea impatiens (Impatiens hawkeri )are sometimes affected by powdery mildew, but a more serious disease called downy mildew has devastated many common impatiens (Impatiens walleriana) plantings in recent years. If the plants in question are the latter, burn or bury the affected stems or dispose of them in the trash. Bury the planting medium and disinfect the container.

Because we can't be sure whether the plants you mentioned were affected by powdery mildew or downy mildew, we advise following the above steps just to be safe.