If you are an adult 21 years of age or older, you may cultivate not more than six marijuana plants for personal use at your primary residence. Not more than 12 plants are allowed at a residence where two or more people over the age of 21 live. Cultivation must take place within a closet, room, greenhouse or other enclosed area on the grounds of the residence equipped with a lock or other security device that prevents access by minors. See A.R.S. ยง 36-2852(A)(2)