How to Manage Pests

Pests in Gardens and Landscapes

Pest identification and confirmation—Powdery mildew

On plants infected with powdery mildew spots of dead tissue, sometimes with rings like those in early blight lesions, may appear in the blotches. However, there are no lesions on stems or fruit, and there is no vascular discoloration as with Verticillium or Fusarium wilt. Rarely, a gray mycelium develops on the leaf surface.

Spots caused by early blight
Spots caused by early blight

Verticillium Healthy

Verticillium Healthy

 


Statewide IPM Program, Agriculture and Natural Resources, University of California
All contents copyright © 2014 The Regents of the University of California. All rights reserved.

For noncommercial purposes only, any Web site may link directly to this page. FOR ALL OTHER USES or more information, read Legal Notices. Unfortunately, we cannot provide individual solutions to specific pest problems. See our Home page, or in the U.S., contact your local Cooperative Extension office for assistance.

Agriculture and Natural Resources, University of California

Accessibility   /PMG/GARDEN/VEGES/DISEASES/ID/idtompowmild.html revised: January 8, 2014. Contact webmaster.