Cannabis Laws in South Dakota

Is weed legal in South Dakota? Medical only — cannabis is legal for registered medical patients, but not for general adult use.

South Dakota allows medical cannabis for registered patients (Measure 26, 2020), who may possess up to 3 oz and grow up to 4 plants in an enclosed, locked space. Dispensaries are open to cardholders with qualifying conditions. Recreational legalization passed in 2020 but was struck down by the courts, and later adult-use measures have failed.

Federally, cannabis is still a controlled substance nationwide — but that status is in flux. See where rescheduling stands →

Regulated by South Dakota Department of Health, Medical Cannabis Program.

Last reviewed 2026-06-19. This is general information for adults 21+, not legal advice — cannabis laws change frequently. Confirm current rules with South Dakota Department of Health, Medical Cannabis Program before acting.