Arapahoe County, CO Cannabis Regulations: Home Cultivation (2026)
Key Facts
- State Law
- Amendment 64, C.R.S. §18-18-406
- Adult Plants
- 6 per adult, 3 flowering
- Household Cap
- 12 plants (HB 17-1220)
- Aurora Code
- §94-370
- Visibility
- Must be enclosed/hidden
Summary
Colorado Amendment 64 and C.R.S. §18-18-406 permit adults 21+ to grow up to 6 plants per adult (12 max per household, only 3 flowering). Aurora City Code §94-370 caps at 12 per household. Plants must be in enclosed, locked space not visible to public. Arapahoe County follows state framework in unincorporated areas.
or produced on land that the person owns, occupies, or controls. (II) (A) Regardless of whether the plants are for medical or recreational use, it is unlawful for a person to knowingly cultivate, grow, or produce more than twelve marijuana plants on or in a residential property; or to knowingly allow more than twelve marijuana plants to be cultivated, grown, or produced on or in a residential property.
Full Breakdown
§18-18-406(3)(a). Adults 21+ may grow up to 6 cannabis plants for personal use, with no more than 3 in flowering stage at once. Household cap is 12 plants regardless of adult residents per HB 17-1220. Plants must be in an enclosed, locked space not visible from public spaces or neighboring properties. adopts the 12-plant household cap and requires cultivation in a locked room, closet, greenhouse, or similar enclosed space with secure entry. Centennial Municipal Code and other Arapahoe County cities generally follow state rules without additional local limits.
Unincorporated Arapahoe County follows state law under the Arapahoe County Sheriff's enforcement. Outdoor residential cultivation technically permitted but impractical given visibility requirements and Colorado's short growing season. §38-12-302. HOAs may also restrict. §44-10-101 et seq. Possession limits: 1 oz for residents, 1 oz for nonresidents.
Violations & Fines
Exceeding plant count: petty offense up to $100 first offense, misdemeanor with escalating penalties. Visible outdoor grow: nuisance citation $100 to $500. Cultivation for unlicensed sale: Class 4 drug felony under C.R.S. §18-18-406(2)(c).
Frequently Asked Questions
How many cannabis plants can I grow in Aurora?
Can I grow cannabis outdoors in Arapahoe County?
Sources & Official References
Other rules in Arapahoe County
Compare Arapahoe County to another location·View the Colorado cannabis regulations overview
See something wrong?
Help us keep this page accurate. If you notice an error or outdated information, let us know.