We have a small organic community garden plot in Berkeley, California. Lately we have been experiencing ever-increasing numbers of aphids which are doing considerable damage to our winter greens. We've tried spraying them off with a high-pressure nozzle, hand-picking them, and just recently, applying a mild soap solution. Can anyone recommend any other successful strategies for dealing with these critters, or ways of maintaining our plot that will make it less desirable for them to inhabit?
Thank you! Paul Revier
