Q.Autumn Blaze Maple
I planted an Autumn Blaze Maple tree in 2017 and it seemed to thrive and grew about 6-8 inches from when it went in the ground. We live on the Eastern Plains of Colorado. This year the tree has not shown any signs of growth other than some small leaves at the bottom of the 2 inch trunk, which are very healthy looking. The rest of the tree looks like it has buds but none of them have opened nor are they showing signs that they will. I snapped a couple of the smaller ones to see if the branch was pliable….snapped right off! We buried the tree halfway up with straw when winter arrived and removed it when spring finally got here. We’ve been making sure it gets water, but it is planted on a very gentle slope so I’m not sure it is soaking up the water or not. Is it a goner?
It looks like the tree has died and that the root stock is sending up shoots.
Sometimes there just isn't an explanation for why a tree dies off.
Most reputable garden centers or nursery's will guarantee a new tree for 1 year.
These links have more information for you.