What is wrong with my zucchini plant?

whompy 6/17/2014, 11:08 am

Hi-

This is the first time I've grown zucchini. I've already picked three good zucchini, and more are coming, but the leaves look weird. You can see the strange coloring on the leaves. Anyone know what's wrong?

What is wrong with my zucchini plant? Img_2910

What is wrong with my zucchini plant? Img_2910

Boz 6/17/2014, 12:44 pm

It looks like powdery mildew to me. I use a weekly application on Neem oil as a preventive. Search this site for powdery mildew for other ways to control it.

yolos 6/17/2014, 1:35 pm

No, that does not look like powdery mildew to me. More like downy mildew but I am not positive. My cucumbers just started to get the same coloring along the edges. They had a problem with downy mildew earlier in the year. I treated them with copper fungicide but maybe it came back again. I am not positive the coloring/pattern around the edges indicates downy mildew. Mine usually get spots in the middle of the leaf. It looks like yours might be getting spots on the entire leaf but it is hard to tell if those spots are consistent with downy mildew.

Maybe someone else has a different diagnosis.

southern gardener 6/17/2014, 2:07 pm

looks more like a "burn" to me??? maybe did the leaves get wet during the day? I dont think over fertilizing, because the other leaves look ok.....

**camprn** 6/17/2014, 2:12 pm

There could be a variety of reasons they look like that. Just prune the affected leaves off. The plant will look 100x better and will make more foliage. If the problem persists, please post another photo.

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What is wrong with my zucchini plant?

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