Greenhouse - Downy Mildew on Coleus (Plectranthus)

Downy Mildew is a disease that is becoming more prevalent in greenhouses. In particular, Coleus, now known as Plectranthus, can be infected. The following are some slides of this disease on Coleus. Click on slides for a larger image.

From a presentation by Bob Mulrooney, Extension Plant Pathologist, UD.