Its legal status and wide range of uses make marijuana a tough plant to regulate — or even to advise farmers about. Here, young marijuana plants are seen at a growing facility.
Using chemicals to control bugs or mold is common among commercial cannabis growers. But with no federal oversight, experts are concerned growers may be using dangerous pesticides.
Ted S. Warren/AP
Leaders of the Alaska Cannabis Club share a joint at their medical marijuana dispensary in Anchorage. On Tuesday, Alaska became the third state in the nation to legalize recreational marijuana use.