DENVER, CO – MARCH, 4: Lights hang above cannabis plants in a “flower room” inside a medical cannabis cultivation facility in Denver, Colorado, U.S., on Monday, March 4, 2013. This is inside a warehouse in Denver, and is one of the facilities that Kristi Kelly, Co-Founder of Good Meds Network, operates.
(Photo by Matthew Staver/For The Washington Post via Getty Images)