Select powdery mildew resistant or tolerant varieties!
Cornell University’s lists of Disease Resistant Varieties
- Green beans: Provider, Merpatim, Parkit, Perkutut, Sriti
- Cucumber: Diva, Cumlaude, Media F1. Slicers: Cornell’s list
- Muskmelon: Ambrosia F1, Primo (western type), Sun Jewel
- Ambassador – Resistant to powdery mildew, entation virus and fusarium wilt
- Cavalier – Good resistance to powdery mildew.
- Greenshaft – Resistant to downy mildew and fusarium wilt
- Rondo – Resistant to fusarium wilt
- Downy Mildew resistant peas: Kelevdon Wonder, Oasis, Twinkle, Avola, Hurst Greenshaft, Ambassador, Cavalier and Peawee.
- Pumpkin: 18 Karat Gold, Gladiator
- Winter Squash: almost all varieties
- Yellow Summer Squash: Success, Sunray, Sunglo
- Zucchini: Ambassador, Wildcat, Cornell’s list
Healthy Practices Make a Difference!
Plant in full sun!
Plant so leaves of one plant don’t touch another and spread the spores.
Remove any debris or dead leaves breeding habitat.
Remove and don’t compost infected leaves. If you don’t remove them, you reinfect your plant each time you water.
Wash tools and your hands before you go from one plant to the next.
Water in the AM, at ground level. No overhead watering.
BEFORE you have mildew, while your plants are still babies, drench the leaves with a baking soda/milk mix. Tablespoon Soda, ¼ cup nonfat milk powder, drop of liquid dish detergent in a watering can.
Drench weekly with your mix. But if you think you aren’t going to be able to get rid of the mildew, sadly, do the one cut prune. Remove that plant so it won’t infect others – yours or your neighbors’. Do this sooner than later. Mildew is windborne, so the more mildew, the more is spread.