Last year I saw a lot of leaf hoppers on my tomato plants. I have seen them for years on the apple tree, roses and this winter, after the snow melted one time, they were on some low plant that was still green. I think their population went up in 2015 during a very long hot summer. I am hoping that this unusually cold winter here will thin them out again. It is possible that they helped spread powdery mildew around the tomatoes last year. If I see them again this year I will try DE.
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