14 AUGUST 1953, Page 19

Cabbage Butterflies

The large and small white butterflies, pieris brassicae and pieris mime, flutter about the vegetable garden and do more long-term damage than a flock of pigeons unless the green stuff has been dusted with derris to discourage them. The caterpillars hatch in about a week. Once they have hatched, hand-picking is fife only method and one always seems to have other things to do, IAN NULL.