Powdery Mildew is a disease, so it is something you spray a fungicide to prevent. Once it appears it is very hard to stop and the leaves affected by it will not recover. We sprayed diluted milk this year and had very good luck with it.

thanks for the help. So you just delute some milk and spary it on it? Do you have to repeat it? I was wondering if it would be ok if I cut off all the ifected leave on the three plants? I sprayed them today with deluted proxiced is that ok?

Thanks,

Melissa

Melissa,
I had similar problem this last year with my gourds, squashes, and pumpkins. Found out that these plants, especially gourds, don't do well when watered with a sprinkler. Really need to water early in day and not let water gather on the leaves.

I found that the powdery mildew came back even after I had cut off the affected parts of the plants.

Diluted milk works well as a good organic control of Powdery Mildew, if it is used prior to the PM appearing and continued weekly throughout the season. The dilution ratio is one part milk to ten parts water. Attention should be made to making certain ALL parts of the leaves are covered, particularly the under side of the leaves where the PM starts. I use a back pack sprayer which makes application much simpler.

If your pumpkins are being grown for display and not for food systemic products which contain daconil such as Immunox, work Extremely well to control PM.