If they're being eaten by those tobacco budworms, I had that problem last year on my Pelargoniums. I never did use anything on them other than my scissors every morning. Rather satisfying snipping them in half. :)

Nothing this year...yet.

Brenda

I agree with Jean - Bt will kill the worms - Non toxic to every thing else.
George

Another vote for BT.

Is this effective for any worms? I have (this year, for the first time) little green worms chewing lacework into all my salvias, also plectranthus. I've been trying to pick them off, but they're hard to spot, and I guess I'm not doing a very good job, because those plants are a mess.

What are the drawbacks of BT? Is it safe around kids? I've never sprayed anything because, first, four little kids, and second, don't want to hurt the good bugs. I understand that BT is specific to worms/caterpillars, but there must be some drawbacks, no?

For any "wowrms" which are caterpillars -- that is, the kids of butterflies and moths.

Bt is so safe that it can be used on edibles the same day you eat them. It is specific to caterpillars.

The drawbacks are that it kills butterfly larvae -- thus, butterfly gardeners don't like it at all.

Caterpillars were eating my petunias, too.....so I pick them off when I see them and chuck them over my wall, into the field. That way, they're happy and I'm happy. Gave the petunias a hair cut and they're back to being happy, too.

Google is your friend...there is a great article that tells you all about Bt right here.

Thanks for the Bt info!

Laura