It’s critically important to cut all cording, at right, and burlap holding a rootball together and push it to the bottom of the hole when planting a tree. Also, while they’re generally not needed but remain a standard practice, tree stakes and ties should be removed within a year after a tree is planted, below left.
Unfortunately, with surprising frequency, cording is never cut and stakes and associated guy wires are never removed.
As result, within just a few years, trunks and branches may be strangled and affected trees often begin to decline - just as they should have been getting large enough to cast a little shade!