The Q&A Archives: Worms on Petunias

Question: Help I got a green worm eating away at my Petunia blooms and foliage. What are they and how do I get rid of them?

Answer: Based on your description it is difficult to tell you which caterpillar in particular (type of butterfly or moth larva) is eating your plant. You may be able to handpick them, but if the infestation is very bad you could apply Bt according to the label instructions. This takes a few days to take effect because the caterpillars need to eat it before it kills them, but it does work.

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