Home Cultivation: Aurora vs Centennial
How do home cultivation rules compare between Aurora, CO and Centennial, CO?
Aurora and Centennial have similar restriction levels.
Aurora, CO
Arapahoe County
Colorado law allows adults 21+ to grow up to 6 marijuana plants per person (12 per household maximum) for personal use, with Aurora requiring indoor cultivation in locked spaces.
View full Aurora rules →Centennial, CO
Arapahoe County
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.
View full Centennial rules →Key Facts Comparison
| Fact | Aurora | Centennial |
|---|---|---|
| Per Adult | 6 plants (3 flowering) | - |
| Per Home | 12 max | - |
| Location | Indoor, locked only | - |
| Visibility | Not from public view | Must be enclosed/hidden |
| 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 |
Highlighted rows indicate differences between cities.
Aurora FAQ
Can I grow on my patio or backyard?
No. Aurora prohibits outdoor cultivation. Plants must be inside a fully enclosed, locked space.
What if I am a medical marijuana patient with an extended plant count?
Patients with a doctor's recommendation may grow more, but must still comply with indoor and locked-space requirements.
Centennial FAQ
How many cannabis plants can I grow in Aurora?
Up to 12 per household regardless of adult count, with no more than 3 plants flowering per adult at once. Plants must be in an enclosed, locked space not visible to the public.
Can I grow cannabis outdoors in Arapahoe County?
Technically allowed for personal use under state law, but must be in a locked, enclosed space not visible from public areas or neighboring properties—effectively requiring a greenhouse or screened enclosure.
Compare other topics
See how Aurora and Centennial compare on other ordinance categories.
Want to add a third city?
Use our full comparison tool to compare up to three cities.
Open Comparison Tool