Gov. John Hickenlooper on Thursday issued an executive order telling state agencies that any marijuana grown with unapproved pesticides is a threat to public safety and should be removed from commerce and destroyed.

A group of Maryland doctors plans to open a medical marijuana testing facility in Columbia to ensure product quality as the state prepares to launch its burgeoning therapeutic cannabis industry.

Colorado marijuana consumers will be able to buy pesticide-free, “certified organic” weed if lawmakers pass a new bill aimed at creating special labels for the state’s legal cannabis industry.

Starting next spring, Oregon will require all marijuana products sold in dispensaries or recreational shops to undergo testing for nearly 60 pesticides.

It has been nearly a year since the state granted eight medical marijuana dispensary licenses, but it wasn't until last month that several licensees started pot production.

It has been nearly a year since the state granted eight medical marijuana dispensary licenses, but it wasn't until last month that several licensees started pot production.

Cannabis cultivator Kyle Kushman, winner of 13 Cannabis Cup titles for his Strawberry Cough strain, advocates growing veganic versus just organic.