• slide
  • slide
  • slide
  • slide
  • slide
  • slide
  • slide
  • slide
  • slide
  • slide
Preventing-Powdery-Mildew-on-Garden-Plants-THUMB.jpg

Preventing Powdery Mildew on Garden Plants

My garden plants were covered with powdery mildew this summer. Can I spray something on them this fall to prevent problems next year?

No, spraying now will not help. The disease is dormant and fungicides are not effective at this stage. The best thing you can do is a thorough fall cleanup. Remove insect and disease infected plant material to eliminate at lease one source of future pest problems. Discard, do not compost, pest infested materials as most of us do not compost at high enough temperatures to kill disease pathogens. Check with your local municipality as most allow you to discard small amounts of pest infected yard waste.

Related

Upcoming Appearances


Jan. 29, 2022
WCBA's Home Building &
Remodeling Expo

West Bend, WI
(in-person event)

Feb. 11-13, 2022
PBS Wisconsin
Garden & Landscape EXPO

Madison, WI
(in-person event)

Feb. 18-20, 2022
NARI Milwaukee
Spring Home Improvement Show

Milwaukee, WI
(in-person event)

Watch Melinda's past webinars ON DEMAND
through 12/31/21.

Learn More

Book an Appearance

Learn More

Enter to Win
Your Best Garden & Landscape in 6 Lessons DVD set

ENTER NOW