Potassium Bicarbonate

[BigVanVader]

Supposedly kills molds/mildews in the garden. I am growing a ton of squash this year and plan to do preventative spraying every 7 days. Does anyone have experience with Potassium Bicarbonate? Does it work? If not what have you found to be successful at eliminating powdery/downey mildew? I prefer organic but If it is live or die I will use what I need to. Thanks for any help/info.

[creister]

I have used potassium bicarbonate before. It works, just make sure you add a sticker like dish soap with it. If you go to dirtdoctor.com there is some info in the library about it. I have also used sodium bicarbonate the same way, but would rather use the potassium.

[Sun City Linda]

I'm going to try it also as soon as I can source it. A local wine supply not far away apparently has it. The recipe I found is 4 TBS. oil, 1 TBS baking soda or potassium Bicarbonate plus a spreader sticker to a gallon. We had, and are still having spring rain here in SoCal.......imagine that! And my tomatoes have various leaf disease. I expect mites, not this stuff! Have no experience so will appreciate any help.

[BigVanVader]

I ordered mine from Amazon, 9$ for 1lb.

[creister]

I went and looked at my mix and it is 4 heaping teaspoon of K bicarbonate, and a teaspoon of dish soap.

[BigVanVader]

Thanks Creister, In your experience will this work on black/grey mold as well? I ask because the dark tomatoes always get it so bad.

[creister]

I mainly used it for black spot on my roses, I believe that it is a general fungicide, but not 100% sure. Another organic fungicide is garlic pepper tea, which also helps keep bad bugs away.

[Mike723]

Even better, I've been reading about horsetail tea and it's miraculous results against PM.. Look into it.. Doesn't get any more organic than that my friend..