The marijuana industry has a pesticide problem. Many commercial cannabis growers use chemicals to control bugs and mold. But the plant's legal status is unresolved.
The grow room at Medical MJ Supply in Fort Collins, Colo., has all the trappings of a modern marijuana cultivation facility: glowing yellow lights, plastic irrigation tubes, and rows of knee-high cannabis plants.
"We're seeing a crop that's probably in it third or fourth week," says Nick Dice, the owner.