Control of Powdery Mildew
Controlling Powdery Mildew in Tomatoes & Squash
"Wettable sulfur, sprayed on tomatoes every two weeks at a rate of 2 tablespoons per gallon will absolutely prevent mildew. And....it is cheap. One tablespoon of wettable sulfur to one gallon of water sprayed on squash leaves AFTER you have removed all infected leaves will control mildew on your...