It looks like that is powdery mildew. I think a lot of leaf-disease problems are caused (or further aggrevated) by getting the leaves wet. I am pretty sure you can get a fungicide to get rid of it. I'm sure someone more knowledgable will be along to help you out!!

Sarah

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Sarah - Zone 5b/6

Rose petal, you should check out the link provided on the watermelon splitting topic as it shows Powdery mildew on watermelon plants, which are similar to yours.

I've never experienced that stuff on my 'maters,
but maybe others have, not sure... but I didn't think they got that stuff...

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Weezie

Don't forget to be kind to strangers. For some who have
done this have entertained angels without realizing it.
- Bible - Hebrews 13:2





http://photobucket.com/albums/y250/weezie13/

I sure do know what you mean. I am just getting my garden started this year. I grew some sweet corn and some cucumbers in one part of it while I worked in a lot of composted horse manure and other organics into the other part. My corn did really well and my cucumbers started out really well, then all of a sudden I got brown blotches on the leaves and the whole plant just up and died on me. I lost all of them
I recently planted twenty five broccoli plants, fifteen regular cabbage, fifteen red cabbage and twenty collard green plants. I only planted them a week ago before we got a lot of rain and they have already been attacked by something because there are small holes in the leaves. I just sprayed them and bought some Dipel dust to use so that I dont get those green worms all through them.

rosepetal,
i believe your problem is lack of air circulation.
which causes mildew.

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art

Thanks Weezie and Rosepetal. I have been out with the Flu or something since last Friday. I will look for the ambush and get after them critters!! Take care, Budman-