Ed Rosenthal

Ed Rosenthal is recognized worldwide as a leading authority on marijuana. In his more than 40 years as the “Guru of Ganja,” he has written or edited more than a dozen books about marijuana cultivation and social policy that cumulatively have sold more than one million copies. As a result of his studies, he developed Ed Rosenthal’s Zero Tolerance®, a line of pest control products designed to eliminate many garden problems.

Currently Rosenthal consults for commercial growers throughout the world. He is also on the faculty of Oaksterdam University, the leading trade school for the cannabis industry. His classes teach pupils techniques to improve the yield and efficiency of their gardens.

Articles by Ed Rosenthal


The Best Gear for Dabbing: An Excerpt from Beyond Buds The Best Gear for Dabbing: An Excerpt from Beyond Buds The Best Gear for Dabbing: An Excerpt from Beyond Buds The Best Gear for Dabbing: An Excerpt from Beyond Buds


The Hydrolife team is pleased to present an excerpt from Ed Rosenthal’s book, Beyond Buds

A Sample from Ed Rosenthal's Big Book Of Buds Greatest Hits A Sample from Ed Rosenthal's Big Book Of Buds Greatest Hits A Sample from Ed Rosenthal's Big Book Of Buds Greatest Hits A Sample from Ed Rosenthal's Big Book Of Buds Greatest Hits


Compiled and edited by Ed Rosenthal, these noteworthy varieties are the cream of the crop and have made gardening easier and results more...

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