Large, brilliant blue trumpet flowers.
Rich blue flowers and narrow leaves; vigorous.
Seedlings from selected large-flowered form of the blue trumpet gentian.
The willow gentian, with many tubular, gentian-blue flowers.
Form of the willow gentian with distinctive flared flowers, gentian blue.
Upright deep blue trumpets with violet streaks and a silky sheen, in autumn.
Clumps of upright stems with whorls of long, deep blue flowers.
Clumps of upright stems with whorls of long, deep blue flowers.
Tufts of erect stems with heads of long, deep blue flowers.
A splendid double autumn gentian with intense blue trumpet flowers.
Vigorous autumn gentian with abundant white-streaked purple trumpet flowers.
Whorls of up to 10 brilliant yellow flowers up tall stems.
Compact, vigorous gentian with strong blue striped flowers.
Leafy stems with pale blue flowers from the leaf axils.
Short upright stems with bright blue trumpet flowers.
Terminal clusters of bright blue trumpet flowers.
Tight clusters of many white flowers on broad-leaved stem.
Mat of olive-green leaves and many small white flowers.
A reliable and vigorous autumn gentian with light blue trumpet flowers.
Mats of glossy, dark-green leaves and light-blue trumpet flowers in early summer
A rounded cluster of white, trumpet-shaped flowers.
Unusual pale blue trumpet flowers in autumn.
Brilliant, rich blue flowers in dense clusters in summer.
Clusters of narrow, white bell-shaped on upright stems. Can be blue.
Upright plant with slender stems bearing clusters of many pale yellow flowers.
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