This year I have grown broccoli, which was gorgeous to eat. Now however, when I cut the little off shoots, they are loaded with caterpillars, and even after steeping broccoli in salted water, there are still caterpillars which are so small they are difficult to see, so they end up getting steamed! The leaves are like lace at this point. I am growing more from seed now (they are only at a very early stage yet in a seed tray), but want to avoid steaming caterpillars! Is there a good organic remedy?