Last verified: March 2026

Do

• Bring valid 21+ ID — Out-of-state driver's licenses, passports, and military IDs all work.
• Buy from licensed dispensaries only — Check the dispensary directory or the MED's licensed facilities search.
• Start low, go slow — Especially with edibles. Colorado's altitude amplifies effects. Begin with 5–10mg and wait at least 2 hours.
• Hydrate aggressively — Denver's altitude and dry climate cause rapid dehydration, which compounds cannabis effects.
• Consume on private property — Your own residence, a 420-friendly hotel/B&B, or a licensed consumption lounge.
• Use rideshare after consuming — Plan transportation before your session. Uber, Lyft, and taxis are widely available.
• Keep products in child-resistant packaging — Store securely, especially in accommodations with children.
• Ask budtenders for guidance — They're experienced and happy to help first-timers.

Don't

• Don't consume in public — Sidewalks, parks, trails, concert venues, restaurant patios — all illegal. Fine up to $100.
• Don't drive impaired — 5 ng/mL THC permissible inference. Wait 6+ hours after smoking, 8+ after edibles.
• Don't take cannabis across state lines — Federal crime regardless of destination. This includes mailing.
• Don't bring cannabis to the airport — TSA is federal. Denver police generally confiscate small amounts, but don't risk it.
• Don't consume on federal land — Rocky Mountain National Park, national forests, and military bases are federal jurisdiction.
• Don't assume your hotel allows it — Most hotels prohibit cannabis. Cleaning fees can be $200–$500+.
• Don't eat the whole edible — The 10mg serving standard exists for a reason. One piece, then wait.
• Don't buy from unlicensed sellers — Street purchases are illegal and products are untested.
• Don't ignore altitude effects — Your tolerance at sea level does not translate to 5,280+ feet.

Common Mistakes