This book far outshines the others on the topic now. 512 pages, with over 1,120 full color images, expanded and completely rewritten to cover all the latest info on grow rooms, outdoor & greenhouse growing, medicinal cannabis, security, lighting, fertilizers, hydroponics, Sea of Green, seeds, cloning, flowering, diseases, pests, breeding, hash making and most anything else you need to know about growing! Clear and appealing to novice growers, with lots of new material for seasoned growers. Photo tour of growrooms around the world. This is the best there is now. 2006 edition. $29.95