Gentiana andrewsii blooms in late summer (August to October).
The flowers are 2 to 4 cm (³⁄₄ to 1 ¹⁄₂ in) long, typically a rich blue color and bottle shaped with closed mouths.
The flowers are clustered at the top of the plant or in the axis of the top leaves.
The stems are 30 to 60 cm (12 to 24 in) long, lax in habit, producing sprawling plants with upturned ends ending with clusters of bee pollinated flowers.
The foliage is hairless with a glossy sheen to it.
Gentiana andrewsii blooms in late summer (August to October). The flowers are 2 to 4 cm (³⁄₄ to 1 ¹⁄₂ in) long, typically a rich blue color and bottle shaped with closed mouths. The flowers are clustered at the top of the plant or in the axis of the top leaves. The stems are 30 to 60 cm (12 to 24 in) long, lax in habit, producing sprawling plants with upturned ends ending with clusters of bee pollinated flowers. The foliage is hairless with a glossy sheen to it.
Gentiana andrewsii