I absolutely ALWAYS get flea beetle damage on my eggplant seedlings as soon as I plant them in ground in the garden but this year I tried sprinkling used coffee grounds all around the bases of the 3 plants.
I can't prove that it works because I have no plants without coffee grounds but none of these 3 plants has a single round hole in the leaves but my tomatoes 25 feet away have holes on the lower leaves so I know that there are flea beetles present. I don't worry about the tomato plants because they easily outgrow any damage and flea beetles do not carry any diseases that I know of.
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