Thank you for your id help.
I just ordered 36 seedlings supposedly two foot tall.
Last year I experimented with planting a couple of trees in november. They were dormant through winter and did very well this year. Through june/july and august i put a sun shade over them. At 6000 feet I'm so much closer to the sun.
Each tree will have to be planted with
enough good soil to last a couple years and the hole lower than the surrounding area to collect rainwater.
The trees were cheap. Adding soil and sun shade is gonna hurt.