A “Walmart of Weed” is only a good idea as long as you can remember how to get there. A California-based company opened a medical marijuana superstore Wednesday in Phoenix, selling “everything but the plant itself.” The 21,000 square-foot store offers some 2,000 products for the cultivating of medical marijuana, including soil, grow lights, and irrigation trays. A doctor is also on site to give eligible patients the medical approval needed to apply to state health departments for cards authorizing them to legally grow and use medical marijuana. The store’s opening was supposed to coincide with the first day Arizona would accept applications for medical marijuana users—except the state has gone to federal court over the matter to make sure residents will not be prosecuted for federal crimes.