This is based on the number of localities entered for mineral species and is therefore slanted towards minerals interesting to collectors with less coverage of common rock-forming-minerals so it does not give an undistorted distribution of Oxygen mineral species.
It has been legal to grow medical marijuana since 2010 in Arizona, which has about 88,000 patients qualified to obtain it from state-approved dispensaries. Patients must live more than 25 miles from a dispensary to grow their own pot. But there is a move to put a proposal to legalize marijuana on the ballot in 2016.
Nevada Growing Laws Explained. The above were summaries; here is a more detailed explanation: Growing marijuana is for adults 21 and older. Just like many of the fun things in life, you have to be 21. Sure, some people start growing marijuana in their teens, but if you want to be legal about it, wait until you are 21.