Petunias Being Eaten By Caterpillars Or Slugs

Question From: Orosi, California, United States
Q: My petunia's are being eaten by tiny worms that are hard to see, until they get big.

A: If they are caterpillars, you can spray with a spinosad based insecticide or dust with a product called BT. If they are slugs - these make holes in the leaves and flowers use a product called Sluggo. Best And Happy Yardening, Nancy.