Wednesday, August 19, 2009

Powdery Mildew Rescue Attempt/The Zucchini Experiment

This Zucchini has been hit hard by powdery mildew. It doesn't visibly affect the fruit but I don't want it to spread and, since we have more than enough squash right now, I decided to try a radical intervention.

Here is the back of it where I have been trimming old or infected or dead leaves.

Here it is after all of the larger leaves have been removed. I left only 3 squash, 2 flowers and a newly emerging leaf. We'll see if it survives. I think soapy water is a treatment for powdery mildew but I'm going to look it up and treat what's left with an organic solution.


  1. We've used a solution of baking soda, water, and a bit of Doc Bronner's with some degree of success .. .

  2. Thanks Chris, I'll give that a try.

  3. I successfully used Pharm Solutions powdery mildew killer. It's orange, oily, and smells nice, as well as organic and safe to use on edible plants. I got it at Whole Foods but I've also seen it at the now failing Smith & Hawken.

  4. i'm not sure what ratios chris is using, but I've got the same problem with my tomatoes, and found this:

    and there's also always the copper treatment


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