It is native to the eastern United States, where it is limited to the Cumberland Plateau of Kentucky and Tennessee.

It has oppositely arranged leaves with thin oval or somewhat triangular blades up to 8 centimeters long by 9 wide.

[6] This plant grows in rockhouses, sandy spaces under overhangs of sandstone rock.

[1] Ageratina is derived from Greek meaning 'un-aging', in reference to the flowers keeping their color for a long time.

[7] This species was initially described in 1940 by American botanist Dr. Emma Lucy Braun, using the name Eupatorium deltoides.