Re: Cabbage Worms
+1 on the Bt. We have been all organic for 20+ years and use that a lot. The other non-toxic option we use is anything with Spinosad in it. With both of these options the worms have to eat a little bit but it shuts down their digestive system and they starve shortly thereafter. So it won't totally eliminate any damage but cuts down on it substantially. Hand picking is actually kind of satisfying in a revenge-full sort of way. Is that wrong? :redface:
BT has been effective for a lot of years. It's harmless to anything else, and makes the infected worms sick enough to die.
The BT toxin gene has been spliced into some plants now, (I think corn) and eliminates certain larvae pests. With this kind of abuse, it won't be long till we have super worms and BT is no longer effective. Enjoy it while it lasts.
There are different varieties of BT, effective against different pests. Be sure you have the right one.
hope it helps
john