Grass
Marijuana is the most controversial drug of the 20th Century. Smoked by generations to little discernible ill effect, it continues to be reviled by many governments on Earth. In this Genie Award-winning documentary veteran Canadian director Ron Mann and narrator Woody Harrelson mix humour and historical footage together to recount how the United States has demonized a relatively harmless drug.
Top cast
Woody HarrelsonNarrator (voice)
Tommy ChongSelf (archive footage)
Cheech MarinSelf (archive footage)
John LennonSelf (archive footage)
Ronald ReaganSelf (archive footage)
Jimmy CarterSelf (archive footage)
Richard NixonSelf (archive footage)
Gerald FordSelf (archive footage)
Cab CallowaySelf (archive footage)
Bill ClintonSelf (archive footage)
George H. W. BushSelf (archive footage)- Harry J. AnslingerSelf (archive footage)
Below are the streaming services currently carrying the movie “Grass” in Canada, along with how each offers it (subscription, buy, or rent) and a direct link. Licensing differs by market, so availability in Canada can differ from other countries.
Where to watch Grass in Canada
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Availability can change as licenses rotate — confirm on the provider’s page before subscribing. Last checked: 12 Sept 2026.