ASPEN, Colo. (AP) – It’s like a beer competition for marijuana. A cannabis festival in Aspen this spring will be the first in the state for approved growers to put their strains in a contest. The Western Slope Cannabis Crown will have about 50 medical marijuana growers enter their strains of weed. The marijuana strains will be diagnostically tested for their THC levels. Growers will also be able to sell to medical marijuana patients. The customers would vote on a ‘people’s choice’ strain.