Here in Massachusetts recreational cannabis is "supposed" to start Sunday 1 July 2018.
Not quite sure where, since the paperwork for retail operations is quite extensive.
In Whip City, USA (aka Westfield Mass), a new dispensary is set to open in August, although I am not sure they got all the licenses needed. I am not sure if it will medical marijuana or recreational or both. A few weeks back it looked like this:
To find it, you just need to get to the back of the State Police Barracks!
What might be offered? See the website (no prices yet).
Enjoy some of the research on the subject.