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Hardiness Zone: 9a
By Carole from Klamath, CA
By
06/27/2010
My nanna says that to get rid of Black Spot on roses; mix 1 cup water, 1 tablespoon bi-carb soad/baking soda and spray on the leaves and around the plant. Not sure if this is the same sort of black spot, but I highly doubt it would damage your plant if you tried anyway.
I have Roma and Grape tomato plants that have loads of fruit on them -- the vines are another story! They were all in good shape until a month ago, when leaves started turning yellow with black spots. I sprayed some insecticidal soap on them a few times, and cut off the bad foliage but they continued to deteriorate.
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