TY - BOOK AU - American Horticultural Society (AHS). AU - Toogood,Alan R. AU - Anderson,Peter TI - Plant propagation/ SN - 9780789441164 (hbk.: alk. paper): U1 - 635.043 23rd PY - 1999/// CY - New York: PB - DK Publishing House KW - Plant propagation KW - Botany KW - Biology N1 - Includes index ; Back of the cover page of this book have attached a map of Hardiness zones of North America, which shows 11 geographical zones based on annual temperatures with accompanying the plants indicate their lower limits of winter cold hardiness.Extreme summer heat and humidity also play a part in a plant's adaptability, many plants hardy in colder zones grow poorly in warmer, wetter ones N2 - A guide to plant propagation that includes explanations of the different propagation techniques, advice on choosing the right seeds, and instructions for caring for the plants ER -