With all this talk of medical-marijuana, new grow shops have sprung up in the Valley like seedlings. weGrow's a California transplant, having started with a store in Sacramento before spreading to Phoenix. In January, the franchise opened another location in Washington, D.C. The Phoenix store is huge, inhabiting a former warehouse. The grow lights, bottles of fertilizers and nutrients, and hydroponics trays don't take up the whole space; the store has a large variety of products. Pot patients will appreciate the running marijuana theme at weGrow, from the video games on a TV surrounded by couches to the posters with growing tips, including how drying pot increases its psychoactive compounds. A doctor who writes medical-marijuana recommendations is located in the same building, and farmers markets — which sometimes feature patients exchanging pot with other patients — take place periodically in the parking lot. After the dispensaries open, forcing patients and caregivers to give up their home-grows, many of the Valley's hydro shops will wither and disappear. weGrow seems to be dug in for the long haul.