Cannabis Grower’s Handbook with Ed Rosenthal today on The Green Peak with Richard Zwicky only on Cannabis Radio. Ed is a leading cannabis horticulture authority, author, educator, social activist, and legalization pioneer. As one of the co-founders of High Times Magazine, Ed writes the much loved and long-running cannabis column, “Ask Ed.” The column continues to be published internationally. “Ed Rosenthal’s Cannabis 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.