The Gardener's Companion to Medicinal PlantsBy: Royal Botanic Gardens Kew, Jason Irving Series: Kew Experts Volume 1 This beautifully illustrated giftable gardening reference book is a complete guide to the growing and use of medicinal plants, combining exquisite botanical illustrations with practical self help projects. Every day sees a discovery in the press about the new uses of plants, and it's certain that most of our most important drugs are derived from plants. From willow (used to