>> reporter: it is still legal to possess it here but you can't buy it here at all. greeley survives on farming, ranching and oil just north of denver, the biggest town in weld county. >> what is the concern? >> we're a guinea pig. colorado and the state of washington are guinea pigs. >> reporter: it starts in washington in 2014. theers can, increased crime know more pot use by kids and uncertainty about whether the federal government will change its tune. >> i still think until the federal government decides to solve this issue, states like colorado and washington out on their own are out on a limb. >> reporter: weld county may have said no but there's a tiny holdout. garden city, only a few blocks big, expects recreational pot to be huge. >> what is it like to be the only place in weld county where this is allowed? >> it is, i guess i'm lucky. >> reporter: lucky to be one of