Recognized throughout the world as the leading authority on marijuana, Ed Rosenthal is the best-selling author on marijuana cultivation. He has written and edited more than a dozen books about marijuana cultivation, social impact, and policy that have cumulatively sold over two million copies. His Ask Ed™ marijuana advice column has been in print for over 25 years.

Ed Rosenthal has been an integral part of the marijuana law reform movement, an outspoken advocate, and lectured on marijuana in many forums and appeared as a guest on various national and local programs. He continues to work locally and nationally toward a saner drug policy.

He is a member of Garden Writers of America and of International Cannabinoid Research Society. He confers internationally with botanic researchers and conducts ongoing research to improve gardening techniques.
Recognized throughout the world as the leading authority on marijuana, Ed Rosenthal is the best-selling author on marijuana cultivation. He has written and edited more than a dozen books about marijuana cultivation, social impact, and policy that have cumulatively sold over two million copies. His Ask Ed™ marijuana advice column has been in print for over 25 years.

Ed Rosenthal has been an integral part of the marijuana law reform movement, an outspoken advocate, and lectured on marijuana in many forums and appeared as a guest on various national and local programs. He continues to work locally and nationally toward a saner drug policy.

He is a member of Garden Writers of America and of International Cannabinoid Research Society. He confers internationally with botanic researchers and conducts ongoing research to improve gardening techniques.