Of the 28 states that have legalized marijuana for adults or patients, 12 ban home cultivation and no other state allows people to grow more than 16 plants in their homes.

There is no true limit in Colorado.

A medical marijuana patient can get a doctor’s permission to grow as many as 99 plants. A caregiver can grow the plants for numerous patients in their own homes with no hard limit.

On the recreational side, the Constitution promises individuals can grow no more than six marijuana plants with three or fewer being mature, flowering plants. But a house with five roommates expands that to 30 plants in a house, and some stretch the law even further and co-op their plants into mega-grows.

Read more at The Denver Post.