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Gardening Know How Questions & Answers - https://questions.gardeningknowhow.comI have powdery mildew on my cucumber plants. I sprayed them with a solution of 9 parts water to one part hydrogen peroxide. I have removed most of the badly damaged leaves. How do I know if it is working? Will the mildew disappear? One source says to spray daily and another says weekly…which is it? Thanks for any help.
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3 Comments To "Powdery mildew"
#1 Comment By MichiganDot On 07/25/2017 @ 9:18 pm
TIL: hydrogen peroxide for mildew. I don’t see how it can work. You are dealing with a fungus. Most homemade remedies include baking soda or milk. If the plant it badly infected, throw it in the trash, not the compost. Here is a link to one source that discusses how to prevent powdery mildew in cukes and gives homemade recipes. I don’t know if there is any scientific basis for them or any study proving efficacy. (Actually, I doubt that there is but it’s worth a try.)
#2 Comment By MichiganDot On 07/25/2017 @ 9:18 pm
Sorry, I forgot to include the link; http://www.veggiegardener.com/preventing-powdery-mildew-on-cucumbers-squash-melons/ [1]
#3 Comment By snowmanlover55@gmail.com On 07/26/2017 @ 9:38 am
There are several websites that discuss using hydrogen peroxide as a cure for powdery mildew on cucumbers. I am hesitant about using the milk remedy because I wonder if it will leave the smell of milk or possibly spoiled milk around my balcony garden. Plus apparently there are many benefits to using hydrogen peroxide in a garden. Thank you for the info.