Every spring I go to a couple properties where I have permission- and dig up young trees - to transplant on my property. I enjoy the transplanting - and have moved hundreds of trees. Some take real well - others wither - Usually its a timing thing.
Anyway - we've had a true January Thaw - and While the ground is still froze - the young trees are easy to find - so I went and did some "tree scouting" for Late March or April transplants.
I found some good Norway spruce and Larch:
It costs almost nothing to transplant - and you can easily dig trees 4 and 5 years old.
Consider moving trees on your own property even.
FH