A fairly benign method would be to use BT, in powder or solution. It causes intestinal distress to the worms and they die. It reportedly does not harm humans. If you are chemically inclined :-( there are many options in your garden store, something recommended for cabbage and tomato worms will work. In El Grande's service, Frank >Reply-To: Suzanne <suz@avana.net> > >Hello all, >I have spotted a rather large, bright green worm on the herb side of the >garden - it did a job on the dill and fennel. Should I be worried about it >heading towards the peppers? I can pick them off, but how do I keep them >from coming back? >tia, >Suz > >