Perennials: v. 1: Early Perennials by Roger Phillips
As part of the "Pan Garden Plant" series, this first volume on perennials covers plants that flower in the spring and early summer. This book includes photographs of over 1250 perennials from around the world, both wild and cultivated, as well as text describing the plants origins, characteristics, frost hardiness and favoured growing conditions. Volume two of this series looks at late perennials. Roger Philips won the Andre Simon Prize for "Wild Food" in 1983 and is the author of "Wild Flowers", "Trees", "Mushrooms" and "Roses and Shrubs".