Now updated to include information on new strains, technology advances, and more, this is the ultimate step-by-step, illustrated guide to growing high-yield, high-potency cannabis—indoors or outdoors—for gardeners of all abilities, with more than 1,500 full-color photographs.

Exploring the art and science of growing high-grade pot, this new edition of The Cannabis Grow Bible by bestselling author Greg Green blends a thorough understanding of marijuana botany with practical advice on maintaining a high-yield garden. 

The book covers everything growers need to know, including how to select the best plant genetics, soil and hydroponic grows, dealing with pests and predators, 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 benefit newbies and professional gardeners alike.

New additions to the fourth edition include:

• Strain selection
• Optimizing indoor and outdoor environments
• The newest lighting technologies
• Breeding basics
• Beginner and advanced extraction methods
• And much more!

With more than 1,500 full-color photographs of every step in the growing process, helpful checklists, and troubleshooting advice for everything from pests and nutrient deficiencies to fungi and mold, this essential guide contains all the information you need to create a high-yield garden that maximizes potency.