Colorado CannabisHome Growing Laws
Everything you need to know about legally growing cannabis at home in Colorado. Stay informed and grow with confidence.
Age Requirement
21+ years old
Plants Per Person
6 (3 mature)
Household Maximum
12 plants
Legal Since
December 10, 2012
Overview
On December 10, 2012, Colorado legalized adult-use cannabis through the Amendment 64 (Colorado Marijuana Legalization). This landmark legislation allows adults 21 and older to cultivate cannabis at home for personal use. Colorado joins a growing list of states that recognize the right of adults to grow their own cannabis.
The home cultivation provisions give Colorado residents the legal right to grow their own supply.
What's Allowed
- Growing up to 6 plants per person (3 mature, 3 immature)
- Up to 12 plants per household
- Possessing all cannabis produced by your plants
- Processing your harvest for personal use
- Using your own cannabis in private
- Gifting up to 1 oz to another adult 21+
Not Allowed
- Exceeding 3 mature plants per person
- Exceeding 12 plants per household
- Growing plants in an open or public place
- Growing plants accessible to minors in the home
- Selling cannabis from your home grow
- Growing if you're under 21 years old
- Violating local ordinances (check your city)
Understanding Plant Counts
| Household Size | Mature Plants | Immature Plants |
|---|---|---|
| 1 Adult (21+) | 3 | 3 |
| 2+ Adults (21+) | 6 (max) | 6 (max) |
What counts as "mature"? A plant is considered mature once it enters the flowering stage. During the vegetative stage, plants are counted as immature. This distinction allows you to maintain a continuous growing cycle with plants at different stages.
Location Requirements
Enclosed & Locked
Plants must be kept in an enclosed, locked area. This is especially important if minors live in or visit the home.
Indoor Only
Colorado requires plants to be grown indoors in an enclosed space. Outdoor growing is not permitted under state law.
Not Publicly Visible
Plants cannot be in an open or public place. Your grow area must be completely enclosed and private.
If You're a Renter
While Colorado law allows home cultivation, your landlord or lease agreement may have restrictions. Here's what to consider:
- •Landlords can prohibit cannabis cultivation in lease agreements
- •Review your lease for cannabis-related clauses
- •Federally subsidized housing prohibits cannabis
- •Many Denver apartments explicitly prohibit growing
- •Consider odor control in multi-unit buildings
Important: Extraction Methods
Using volatile solvents for cannabis extraction is illegal in Colorado, even for personal use. This includes:
- • Butane (BHO extraction)
- • Propane
- • Other flammable gases or liquids
Non-volatile methods like Rosin pressing, Ice water hash, Dry sift, or Infusing with food-safe oils are permitted for personal use.
Tips for Staying Compliant
- 1
Mature vs Immature
Colorado distinguishes between mature (flowering) and immature plants. You can have 3 of each per person, up to 12 total per household.
- 2
Check Local Laws
Cities and counties can add restrictions. Denver limits grows to 12 plants max regardless of number of adults. Always check local ordinances.
- 3
Indoor Required
Colorado requires indoor cultivation in an enclosed, locked space. No outdoor growing is permitted.
- 4
Minors in Home
If minors live in or visit your home, extra precautions are required. The grow area must be locked and inaccessible to youth.
- 5
The Pioneer State
Colorado was the first state to legalize recreational cannabis in 2012. The laws are mature and well-established.
Ready to Start Growing?
Now that you know the laws, learn how to grow. Our complete guide takes you from seed to harvest with step-by-step instructions.
Disclaimer: This information is provided for educational purposes only and should not be considered legal advice. Cannabis laws can change, and local municipalities may have additional restrictions. Always verify current laws and consult with a legal professional if you have specific concerns. Last updated: January 2025.