Booklist Review

Cold climates, so the authors define, are regions in which winter temperatures can fall below 20 degrees. They list 50 of the most popular perennial groups and, within these groups, give details on 1,700 wild and cultivated varieties best suited to cold climates. There are in-depth profiles of each plant group and descriptions and specific growing details on each variety. Site, light, soil, and moisture requirements are given, along with instructions on planting, caring, and propagation. The authors also offer tips on using the plants as cut-and-dried flowers and on choosing companion plants. Part 2, "The Basics of Growing Perennials," is a crash course in perennial gardening, giving advice on preparing a site, buying potted perennials, composting, watering, mulching, fertilizing, weeding, staking, deadheading, pruning, winter protection, and problems such as diseases and insects. --George Cohen