
Planted in central Indiana landscapes and fully hardy here, and formally listed as invasive by both the Wisconsin and Minnesota DNRs. Its specific Indiana regulatory or watch-list status is UNVERIFIED — it was not found among the 44 species prohibited under Indiana's Terrestrial Plant Rule, unlike tree-of-heaven, which is on that list; Callery pear is not on it either, despite how often people assume otherwise. Confirm before stating any of this to a customer.
A small imported ornamental planted for brilliant red fall color that has escaped cultivation across the upper Midwest. Calls about it are almost never structural — they are either "it has outgrown the spot by the front door" or "it is seeding into my beds and the fencerow," making it a rare case where removal gets recommended for reasons having nothing to do with safety.