Carolyn Richrath
Carolyn Richrath
  • Hometalker
  • Westmont, IL
Asked on Jul 25, 2013

My cucumbers have mildew on the leaves

Carolyn RichrathDouglas HuntNancyPJ
+3

Answered

What can I do to get rid of the silvery mildew from the leaves of the cucumbers?
6 answers
  • Douglas Hunt
    on Jul 26, 2013

    Without seeing a photo it's hard to know exactly what the issue is, Carolyn, but I suspect you have a case of powdery mildew, which is fairly common on cucumbers. Depending on how significant the problem is, you might start by spraying the leaves with baking soda (1 teaspoon in 1 quart water), which will raise the pH, creating an inhospitable environment for powdery mildew. If the condition worsens, you may have to resort to a fungicide. You'll find more from University of Illinois Extension here: http://urbanext.illinois.edu/hortanswers/detailproblem.cfm?PathogenID=139

  • Carolyn Richrath
    on Jul 26, 2013

    I think this is something I would try, thanks , any suggestions for fungicide? I have always been afraid of fungicide. I will save that website from U of I extension..Thanks a lot

  • NancyPJ
    on Jul 27, 2013

    I am beginning to combat this for the first time, on my peas and mint (and potentially beans). I did the baking soda last night and this morning, and it seems to have helped. but given how much there is (and how fast it came on), I saw on the UC Berkeley site that horticultural oil is the best thing to get rid of it. So I have some coming from Amazon, but meantime, baking soda seems like it will at least keep it from getting worse.

  • Douglas Hunt
    on Jul 27, 2013

    Carolyn, Safer makes an organic fungicide. I would use any of their products with confidence. Nancy, make sure you check the label on your horticultural oil for temperature restrictions before applying.

  • Carolyn Richrath
    on Jul 27, 2013

    Thank you. Right now I am trying the baking soda and water...I will get some epson salts to have on hand in case I need it.

  • Carolyn Richrath
    on Jul 28, 2013

    R. Adam Q....what are the proportions of epson salt and asprin...say for a quart of water.?

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