Which college degrees do i need?

I have decided pretty much that what i wanna do with my life is open a Medical Marijuana Dispensary. The only problem is that I'm not sure what majors and minors to get at college. I was thinking a major in something such as agriculture or botany, and a minor in something like buisness just so iknow how to run my dispensary. But i have NO IDEA what kind of majors/minors ill need since ill have a medical related dispensary so is there a major ill legally need to run my buisness?