Ian Gay wrote:
....
Since there's only 12 plants involved, it's not much work to
just pick the caterpillars by hand and stomp on them.

yep, that's what i'll be doing for now, but
still reading and interested in comments about
life-cycle or habits of creatures and plants.

so far one source says to enclose the head in
stockings to keep them out, but that doesn't take
care of those already inside or tell me if the
plant will out grow those inside (as they must
eventually eat enough at some point...) and end
up with a solid cabbage head after all.

looks like only one life-cycle per season.

the other thing is that there are very few
decoy varieties around. i have almost no
other brassicas in the gardens/yard. so these
plants are acting like a magnet...


songbird