What still needs checking
- The 2024 handbook is explanatory; later statute and tax pages were used for changed limits and rates.
- No local ordinance, shop opening, hotel policy or medical exception was individually verified.
Possession and use
Adults 21 or older may possess up to two ounces of marijuana under the increased adult-use limit. Retail sales to one customer in one transaction have their own quantity rules and should not be confused with the amount a person may possess. Public consumption remains prohibited, including on streets, in parks and in many hotels. Driving while impaired is illegal. A private property owner can restrict use, even where adult possession is allowed.
Medical access
Colorado residents with a qualifying condition may apply to the state medical marijuana registry; medical patients have distinct purchase, possession and tax rules. The official legislative handbook describes a two-ounce medical possession allowance unless a physician recommends a greater amount. A medical card issued elsewhere should not be treated as a Colorado registry card or proof of access to medical-only pricing. Adult visitors 21 or older can use licensed recreational retailers.
Home growing
An adult 21 or older may grow up to six plants, with no more than three mature, flowering. Colorado generally caps a residential property at 12 plants total, regardless of how many people live there or whether the plants are for medical or adult use. The current residential count rule does not state a separate six-mature cap for the whole residence; each grower still has an individual flowering limit.
Medical patients ordinarily have six plants, no more than three flowering, but documented medical need can support an extended count. The residential limit may rise to 24 only when the patient or caregiver meets the state registration, local-law and notice conditions; medical and adult entitlements should not simply be added together. Secure the grow and check local rules before planting.
Where to buy
Use a store licensed for retail or medical marijuana as appropriate. Colorado's Marijuana Enforcement Division maintains licensing information, while local governments decide whether to allow shops and may impose location or hours restrictions. Colorado has both adult-use and medical products; a product sold in one channel should not be assumed eligible in the other. Ask the seller about transaction limits rather than using the possession threshold as a purchase allowance.
Taxes and price
Retail marijuana sales carry a 15% state retail marijuana sales tax. Colorado also levies a 15% excise tax at the first transfer from cultivation to a retailer or manufacturer, calculated from the average market rate or actual price; that is a business-chain charge, not a second 15% retail line that every shopper should add mechanically. State and local taxes differ for medical sales and localities may add charges.
Travel and public places
Do not move marijuana across Colorado's state border, even to another legal state. Federal property, airports and many public spaces have their own prohibitions. Keep products sealed and out of a driver's reach and never drive impaired. Lodging policies and local use rules matter; a licensed purchase does not grant a place to consume. Check local rules before planning a visit or cultivation.
Sources and remaining checks
We checked the sources below on the date shown above. Rules may have changed since then. Check the current rules before making a decision, and read the remaining questions noted in this guide.
- Colorado General Assembly Marijuana Legalization Handbook. Read 23 Oct 2026; 2024 handbook summarizing adult and medical framework.
- Colorado HB 21-1090. Read 23 Oct 2026; adult possession increased to two ounces.
- Colorado medical marijuana registry. Read 23 Oct 2026; resident application and card program.
- Colorado HB 17-1220. Read 23 Oct 2026; residential plant cap.
- Colorado Department of Revenue marijuana sales tax. Read 23 Oct 2026; 15% retail tax.
- Colorado Department of Revenue average market rate. Read 23 Oct 2026; 15% excise at first transfer.
- Colorado Revised Statutes 2026, section 18-18-406. Official 2026 criminal code; 12 total plants on residential property, regardless of medical or recreational purpose, with stated exceptions.
- Colorado Revised Statutes 2026, section 25-1.5-106. Official 2026 medical code; conditional 24-plant residential exception for patients and primary caregivers.
- Colorado General Assembly medical marijuana law summary. Ordinary medical six-plant, three-flowering allowance and exceptions.
No professional legal review is claimed. Check official sources and the verification notes below.