
Certified GKH Gardening Expert
It may not have survived. There are many things that can kill a newly planted tree the first year they are planted. This article will help you determine if it is still alive:
https://www.gardeningknowhow.com/plant-problems/environmental/how-to-tell-if-a-plant-is-dead-and-how-to-recover-an-almost-dead-plant.htm
If the branches are still pliable, then it may still be alive and just need more time. This article will also suggest other reasons that the tree may not be leafing out:
https://www.gardeningknowhow.com/ornamental/trees/tgen/tree-leafing-problems.htm