[...] county fair organizers say the marijuana categories will add a fun twist on Denver's already-quirky county fair, which includes a drag queen pageant and a contest for dioramas made with Peeps candies. The nine marijuana categories include live plants and clones, plus contests for marijuana-infused brownies and savory foods. Other contests — patterned after Amsterdam's famed Cannabis Cup — already gauge drug quality and flavor. Prizes will also be given for speedy joint-rolling, though fair organizers insist there won't be any marijuana consumption on-site. There's a speed text-messaging contest, and the highlight staple of a Western fair, a rodeo, has been replaced with a bicycle rodeo and a troupe of performing pigs. California holds an Emerald Cup at the fairgrounds in Sonoma County, Calif., where guests with medical clearance are able to sample the drug.