This may be my last year of growing brassicas. I'm planning to net/fleece the whole lot. I'm sick and tired of the little beasties. Cabbage white caterpillars, snails, and whitefly. I don't like spraying, and the handpicking theory is OK if you don't work and want to spend hours and hours on the lottie picking off caterpillars. Whitefly have been a real problem this year, they're not even big enough to pick off.