It is native to North America, where it is widespread in southern Canada and the eastern United States.

[3] It is found in a variety of sunny and semi-shade habitats, including prairies, glades, woodlands, and disturbed areas.

[4] Several varieties have been recognized across its range, although their distinction is still uncertain.

[4] It is a short-lived perennial, usually flowering below taller grasses and forbs.

It produces a spike of white or pale blue flowers in the summer.