I was not really suprised by my new visitors, Mr Green Caterpillar and his many green friends. They seem to appear where ever brassicas thrive. Can you see him there (on the top right) with his many dark green prodigy(eggs below left)? Unparalleled satisfaction is to be had by squishing these fellas between your fingers. I've read of some squeemish gardeners who baulk at this practice, so you can always drop them onto the ground and well, ground them to mush.
Trick is to get onto them quickly before they are in plague proportions, which seems to happen almost overnight. Check them each day if you can, as they are very good at hidding and the babies are hard to spot. Dipel is the only organic, safe spray I know of for this pest. It's expensive and I can't help but wonder if it harms Mrs Brown Earthworm.
My patch is quite a managable size for manual removal so I persevere with this method. I have picked a few large brocolli heads but want the plants to remain healthy for the side shoots that are already starting to appear.
Also picking beautifully now are these baby carrots...