What is the primary challenge encountered when only cutting down a mature tree-of-heaven specimen?

Answer

The remaining roots send up a dense array of vegetative sprouts

Cutting the trunk alone is rarely effective because the roots remain viable and generate numerous root suckers from the root crown, necessitating continuous follow-up treatment.

What is the primary challenge encountered when only cutting down a mature tree-of-heaven specimen?
plantmethoderadicationcontroltree of heaven