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nmab05

Homemade Baking Soda Spray Now Black Spots!

nmab05
11 years ago

I made a homemade spray for my tomatoes for early blight with baking soda, water, oil and dish soap. I removed the yellowing leaves and then sprayed the remaining with the mixture last afternoon. I went out today to find black spots forming on the leaves. I'm thinking their frying in the sun so I placed under an umbrella for shade until I can figure this out.

Any ideas?

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