Is there a way to prevent powder mildew?
The last two years I've had a real tough time with powder mildew on my pumpkins and my tomatoes. Nothing seems to cure it. Now that the season is not too far away, I wonder is there a way to prevent it? I'm only doing one pumpkin plant this year but I plan about a dozen tomato plants. It seems to be the only problem I run into.
Thanks for any ideas.