The Cannabis Grow Bible fully explains both the art and science behind growing high-grade pot. Author and aficionado Greg Green blends a thorough understanding of marijuana botany with practical advice on coping with the day-to-day demands of maintaining a high-yield garden, and offers proven methods that maximize both yield and potency. Fully updated and illustrated in full color, and with techniques for both indoor and outdoor cultivation, this comprehensive guide covers everything growers need to know, including how to select the best plant genetics, soil and hydroponic grows, dealing with pests and predators, advanced systems and breeding, and protecting the crop from nosy neighbors. It also explains the "Screen of Green" technique that gives a higher yield using fewer plants. Green's easy-to-follow instructions and the accuracy, breadth, and depth of information presented benefit newbies and professional gardeners alike.