Tracey Lampe stakes cannabis plants at a medical marijuana growing facility in Denver, Dec. 6, 2013.
Tracey Lampe stakes cannabis plants at a medical marijuana growing facility in Denver, Dec. 6, 2013. Matthew Staver The New York Times
Tracey Lampe stakes cannabis plants at a medical marijuana growing facility in Denver, Dec. 6, 2013. Matthew Staver The New York Times