New and experienced gardeners here benefit from classes and clubs in tune with the rhythms of Southern California horticulture. This is a good month to join a community garden club or plant organization that have monthly meetings and/or newsletters chock full of locally-based garden tips. County-wide groups include the San Diego Horticultural Society (www.sdhortsoc.org ), San Diego Floral Association (www.sdfloral.org ), and San Diego Edible Garden Society (www.sdedible.org ).