WASHINGTON — The tidy Takoma Wellness Center, one of the first medical marijuana dispensaries to open in the nation's capital, has a quaint reception area furnished with black leather chairs, plants and artwork. On the front desk are a pile of business cards and a sign-in sheet.
In the back, shelves are stocked with the latest marijuana accessories: pipes, cookbooks, even a machine that mixes the drug into butter or oil for cooking.
All that's missing are more patients.
Since opening this summer, the three Washington, D.C.-based marijuana dispensaries have served a total of 111 patients in a district with about 600,000 residents. That's about 100 times fewer...