Gentiana andrewsii has clusters of dark blue blooms at the top of stems or in upper leaf axils. Also known as Bottle Gentian, it flowers in late summer or early /mid autumn. It is also called Closed Bottle Gentian because the flowers do not open. It is interesting to note that bumble bees are their main pollinator because they are the only insects strong enough to pry open the blooms.
Gentiana andrewsii is a wildflower common to moist woods, thickets, and near streams. It is native to much of the northeastern two-thirds of North America. Bottle Gentian are slow-growing perennials, but long lived.
Gentiana andrewsii prefers morning sun and afternoon shade and moist, well-drained soil, but it can tolerate full sun with sufficient moisture. Bottle Gentian does not likes winter wet.