Alphabetical Plant Listing

Gentiana acaulis (Stemless Gentian)

Stemless Gentian, Large-Flowered Gentian, Gentianella, Trumpet Gentian


One of the most spectacular rock garden plants, award-winning Gentiana acaulis (Stemless Gentian) is an evergreen alpine perennial forming a slowly spreading mat of glossy, deep green, elliptical leaves. Sitting directly on top of the foliage, large, solitary rich blue, trumpet-shaped flowers bloom in late spring to early summer. Facing upward, they reveal green-spotted throats. Noted for its preference for cool-summer climates, this stunningly attractive plant is perfect for rock gardens or as a groundcover. The conspicuous beauty of its true blue color will not be passed by unnoticed!

  • Winner of the Award of Garden Merit of the Royal Horticultural Society.
  • Grows up to 4-6 in. tall (10-15 cm) and 8-12 in. across (20-30 cm).
  • Thrives in full sun or part shade, in moist, well-drained soils. Prefers afternoon shade in hot summer climates.
  • Ideal as a groundcover, for garden edging, cottage gardens or rock gardens.
  • Rabbit resistant.
  • Watch for slugs, snails, aphids and root rot.
  • Propagate by seed or division of offsets in spring.
  • Native to the Alps, Carpathians and Pyrenees

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Requirements

Hardiness 3 – 7
Heat Zones 5 – 8
Climate Zones 2, 2A, 2B, 3, 3A, 3B, 4, 5, 6, 14, 15, 16, 17
Plant Type Perennials
Plant Family Gentiana - Gentians
Exposure Full Sun, Partial Sun
Season of Interest Spring (Late)
Summer (Early)
Height 4" – 6" (10cm – 15cm)
Spread 8" – 1' (20cm – 30cm)
Spacing 12" (30cm)
Water Needs Average
Maintenance Low
Soil Type Chalk, Loam, Sand
Soil pH Acid, Alkaline, Neutral
Soil Drainage Moist but Well-Drained
Characteristics Plant of Merit, Showy, Evergreen
Tolerance Rabbit
Garden Uses Edging, Ground Covers, Patio and Containers
Garden Styles Gravel and Rock Garden, Informal and Cottage

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filmfoto / 123RF Stock Photo

While every effort has been made to describe these plants accurately, please keep in mind that height, bloom time, and color may differ in various climates. The description of these plants has been written based on numerous outside resources.


Requirements

Hardiness 3 – 7
Heat Zones 5 – 8
Climate Zones 2, 2A, 2B, 3, 3A, 3B, 4, 5, 6, 14, 15, 16, 17
Plant Type Perennials
Plant Family Gentiana - Gentians
Exposure Full Sun, Partial Sun
Season of Interest Spring (Late)
Summer (Early)
Height 4" – 6" (10cm – 15cm)
Spread 8" – 1' (20cm – 30cm)
Spacing 12" (30cm)
Water Needs Average
Maintenance Low
Soil Type Chalk, Loam, Sand
Soil pH Acid, Alkaline, Neutral
Soil Drainage Moist but Well-Drained
Characteristics Plant of Merit, Showy, Evergreen
Tolerance Rabbit
Garden Uses Edging, Ground Covers, Patio and Containers
Garden Styles Gravel and Rock Garden, Informal and Cottage

Great Plant Combination Ideas with Gentiana - Gentians

Guides with Gentiana - Gentians

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