Help me to identify this tree sapling
I live in Coppell, TX (75019).
Two years ago, I found a small tree sapling growing under my oak tree and it looked very much like a Christmas tree (Spruce or Pine). I took care of the sapling by watering it regularly and now it is over a feet and half in height. I took it out from the ground and planted it in my west facing front yard of the house.
When I took the tree out from the ground, I noticed that it has got some bristle like (soft thorns) on stems where the needles originate. I am attaching a picture of the tree sapling.
Can you please identify what tree is this ? I tried several online tools with no luck and I doubt if this is a native tree of TX. Thanks!