Ed Rosenthal is recognized worldwide as the leading authority on marijuana. For the last 35 years he has worked as a cultivation expert, researcher, writer, teacher and activist. His volume of works covers marijuana gardening, law, social policy and culture. They have cumulatively sold over two million copies worldwide.

Rosenthal views marijuana law as a crucial social issue. He serves as an expert witness on federal and state cultivation trials. He teaches classes at Oaksterdam University as well as cultivation seminars. Rosenthal is active promoting and developing civil regulation for marijuana.

Green Aid: The Medical Marijuana Legal Defense and Education Fund was formed to support Ed’s federal trial in 2003. Currently he serves as the Executive Director of Green Aid. Green Aid works to fund and publicize precedent-setting marijuana trials. His best-selling titles include Marijuana Grower’s Handbook, Medical Marijuana Handbook, Why Marijuana Should Be Legal, the Big Book of Buds Series, Marijuana Garden Saver, and Best of Ask Ed, among others. Rosenthal currently lives in Oakland, CA.