brand new apple tree
a new apple tree that has sprouted leave just on the tips of the very long branches should i prune now in May or wait to let things get started. the roots were in sawdust and short. There is not a central leader...the branches look like a hand reaching to the sky and are at least 1.5 feet long...( I'm also at 5,000 ft) just prayin' for an apple sometime.
Thanks for your question. New trees should be pruned at planting time, Here is a Penn State article about pruning apples and pears in the home orchard,
Click on "First Growing Season" at the top of the article to get specifics. You mention your tree has no central leader. This is really the recommended method for training because you want to establish a sturdy frame right away. Determine the strongest branch near the center of the tree and consider that to be the leader. Prune it to 30". The remaining branches should be removed. This will force the tree to create scaffold branches at the buds on the central leader.
I have also include a link to Oregon State article about selecting fruit tree varieties in Central Oregon. https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=6&ved=0ahUKEwj...
Good luck getting your apple.