Includes a diagnostic guide, and clear photographs to quickly identify problems, and features organic and least-toxic remedies.

Ed Rosenthal is a leading cannabis horticulture authority, author, educator, social activist and legalization pioneer.  One of the co-founders of High Times Magazine, Ed writes the much loved and long-running cannabis column, ‚ÄúAsk Ed.‚Äù The column continues to be published internationally. 
“Ed Rosenthal’s Marijuana Grower’s Handbook”, has become the definitive marijuana cultivation resource, inspiring millions to learn the best marijuana cultivation techniques. His book is the official course book of Oaksterdam University.