When did Colorado legalize cannabis?

Colorado voters approved Amendment 64 on November 6, 2012. The first recreational sales began on January 1, 2014, when 24 stores opened across 8 towns, generating over $1 million in Day 1 sales. Medical marijuana was legalized in 2000.

How much cannabis can you buy in Colorado?

Adults 21+ can purchase 1 ounce of flower, 8 grams of concentrate, or 800 mg of edible THC per transaction. The possession limit is 2 ounces. These limits are equal for residents and visitors.

Can tourists buy weed in Colorado?

Yes. Any adult 21+ with a valid government-issued photo ID — including out-of-state licenses and passports — can purchase recreational cannabis in Colorado. Purchase and possession limits are the same for visitors and residents.

Who regulates cannabis in Colorado?

The Marijuana Enforcement Division (MED) within the Department of Revenue regulates Colorado's cannabis industry. The MED oversees licensing, compliance, seed-to-sale tracking (Metrc), and enforcement.

Is Weed Legal in Colorado? Yes — Since 2014

Q: Is weed legal in Colorado?

Yes. Recreational cannabis is legal for adults 21+ under Amendment 64, which passed November 6, 2012 with 55.32% of the vote. Colorado was the first place in the world to sell legal recreational cannabis on January 1, 2014.

Legal Disclaimer: This information reflects Colorado cannabis law as of March 2026 and is for educational purposes only. It is not legal advice. Laws and regulations change — always verify current rules with the Marijuana Enforcement Division or a qualified attorney. Cannabis remains illegal under federal law.

Last verified: March 2026

The Short Answer: Yes, Since 2014

Cannabis is fully legal in Colorado for adults 21 and older. On November 6, 2012, Colorado voters approved Amendment 64 with 55.32% of the vote, making Colorado and Washington the first jurisdictions in the world to legalize recreational cannabis by popular vote. The first legal recreational sale happened on January 1, 2014, when Iraq War veteran Sean Azzariti purchased 3.5 grams of Bubba Kush at 3D Cannabis Center in Denver.

Colorado's medical marijuana program dates back even further. Amendment 20 passed in November 2000 with 54% approval, making Colorado one of the first eight states with a medical cannabis program. The medical market exploded between 2009 and 2011, growing from 5,000 to nearly 119,000 patients.

Key Facts at a Glance

Recreational (Adult-Use)	Legal for adults 21+ with valid government-issued ID
Medical	Available since 2000 — chronic pain, PTSD, seizures, autism, and more
Purchase Limit	1 oz flower, 8g concentrates, or 800mg edibles per transaction
Possession Limit	2 ounces of cannabis or equivalent
Home Growing	6 plants per adult (3 mature), 12 max per household
Where You Can Consume	Private property (with owner permission) or licensed consumption lounges
Visitors	Same limits as residents — any valid 21+ ID accepted
State Regulator	Marijuana Enforcement Division (MED)
Governing Law	Colorado Constitution, Article XVIII, Section 16 (Amendment 64)

Colorado's Cannabis Timeline

No state has a more consequential cannabis history than Colorado:

November 2000: Amendment 20 passed with 54% of the vote, legalizing medical marijuana.
2009–2011: The medical market exploded — patient rolls grew from 5,000 to 119,000 after dispensaries were effectively greenlit.
November 6, 2012: Amendment 64 passed with 55.32%, legalizing recreational cannabis for adults 21+.
November 2013: Proposition AA approved the cannabis tax structure (15% excise + 15% special sales).
January 1, 2014: First legal recreational cannabis sale in the world. 24 stores opened across 8 towns. Over $1 million in Day 1 sales.
2014: The edibles crisis led to the 10mg THC serving standard — now used nationwide.
2019: HB 19-1230 authorized cannabis consumption lounges and delivery, both requiring local opt-in.
2020: Governor Polis pardoned 2,732 possession convictions; Accelerator Program launched.
2021: Sales peaked at $2.23 billion. Additional 1,351 pardons issued.
April 2025: Colorado Springs began recreational sales after a decade-long ban.

65% of Municipalities Have Opted Out

Local Opt-Out Is Common

Amendment 64 allows any city or county to prohibit cannabis businesses. Roughly 65% of Colorado's 273 municipalities have opted out of recreational sales. Only 25 of 64 counties allow some form of cannabis business. Most Coloradans live in opt-in areas, but vast stretches of the state remain cannabis-free.

Explore Colorado Cannabis Law

Recreational Laws

Amendment 64 rules, who can buy, ID requirements, and the regulatory framework.

Medical Program

Qualifying conditions, physician certification, 2 oz daily limit, and the declining medical market.

Possession Limits

1 oz purchase, 2 oz possession, gifting rules, and equal limits for visitors.

Home Cultivation

6 plants per adult (3 mature), 12 per household, enclosed locked space required.

Are You 21 or Older?

Is Weed Legal in Colorado?