Fast Finishing Outdoor Strains

Hey everyone, this is my first time growing outdoors. I'm located in Colorado and am going to be growing in a greenhouse. Was looking for some advice on fast finishing, high yielding strains. I want to be cropped by the middle of October to beat the snow because I don't know if my GH will hold up or not. Any advice or experience you can share would be appreciated. Think I will be buying my clones from the dispensary, unless I can find another reliable source. Or would starting seeds be better? I want to plant them June 1st but want to get them started in the next week or two.

Use clones, they are easier for new growers...you wont have to deal with culling males..
Ask the people at the dispensary what strains finish quickly...They should know about their clones...


Also match your lights to the sunlight hours you will get on June 1st...