when was medical marijuana legal in colorado



Is weed legal In Colorado?

Yes. Both adult-use and medical marijuana are legal in the state of Colorado.

Legislation history

The Colorado Marijuana Legalization Amendment, also known as Amendment 64 , was approved by voters on Nov. 6, 2012. Amendment 64 legalized recreational cannabis for adults 21 and older, and established sales and cultivation taxes. It was codified into Colorado’s constitution as article XVIII, section 16 .

Medical cannabis has been legal in the Centennial State since 2000 when voters approved Initiative 20 , which became Amendment 20 and was codified into Colorado’s constitution as article XVIII, section 14 . It legalized medical marijuana and created an identification card system for patients and their caregivers. The medical and recreational laws were later combined into the Colorado Revised Statutes (CRS) Title 44, Article 10 .

In 2019 the state passed HB 1230 , which created new business licenses for marijuana lounges, tasting rooms, and other cannabis-based hospitality businesses, allowing consumers to consume marijuana and marijuana-infused products purchased elsewhere.

Colorado marijuana laws and Colorado’s adult-use marijuana industry are regulated by the Colorado Department of Revenue (CDOR). It also provides regulatory oversight and licensing for medical marijuana production, distribution, testing, and sales. The Colorado Medical Marijuana Registry is regulated by the Colorado Department of Public Health and Environment (CDPHE).

Where is it safe to purchase?

Adults 21 and older and medical marijuana patients may legally purchase marijuana from any state-licensed dispensary . If patients are unable to make the transaction themselves, they may also designate a caregiver to purchase and deliver medical marijuana on their behalf. Patients may choose to purchase from dispensaries that only sell to registered patients.

Medical marijuana and medical marijuana products are subject to the state’s sales tax. Retail marijuana and marijuana-infused products are exempt from this sales tax but they are subject to a 15% retail marijuana tax , which is added to the final retail purchase price. In addition, wholesalers pay a 15% excise tax on their first sale to a processor or retailer. That tax gets built into the retail price.

Cannabis delivery is allowed for medical marijuana patients in Colorado. Delivery for all adult-use marijuana begins Jan. 2, 2021. Travelers cannot bring marijuana to Denver International Airport or any other airport.

Finding licensed dispensaries in Colorado

Adult-use consumers and medical marijuana cardholders can find licensed dispensaries in Colorado and search by major metro areas including Colorado Springs, Boulder, and Denver. Many dispensaries offer delivery and curbside pickup services in addition to storefront sales.

Where is it safe to consume?

It is legal to consume medical or recreational cannabis in private. Colorado also licenses “hospitality establishments” — lounges, tasting rooms, and other locations where customers can purchase and consume marijuana and marijuana-infused products.

It is illegal to use or consume cannabis in a motor vehicle, and it is illegal to drive under the influence of cannabis.


While adult-use and medical marijuana in Colorado is legal, there are still legal limits to how much one may possess.

Adults 21 and older may possess up to 1 ounce (28 grams) of marijuana or cannabis-infused products and 8 grams of concentrates.

Adults may also give away up to 1 ounce (28 grams) of usable cannabis to another adult 21.

Qualifying patients and their caregivers may legally possess up to 2 ounces (57 grams) usable cannabis.

View the marijuana laws & regulations for Colorado.