Alphabetical Plant Listing

Gentiana andrewsii (Closed Bottle Gentian)

Closed Bottle Gentian, Closed Gentian, Bottle Gentian


Gentiana andrewsii (Closed Bottle Gentian) is a clump-forming perennial noted for its tight clusters of bottle-shaped, dark blue to purple flowers which always remain closed. Since the petals never open, the unusual flowers look like buds about to open. Blooming in late summer to early fall, sometimes until frost, the blossoms appear at the tops of the stems or in the upper leaf axils. Plants may count up to two whorls of flowers. The foliage of narrow, rich green leaves, whorled or opposite, appears below the clusters, turning gold with ruddy highlights after flowering. Easy to grow, Closed Bottle Gentian is a welcome addition to a moist wildflower garden, where its intriguing blue blossoms will add a subtle touch of color.

  • Grows up to 12-24 in. tall (30-60 cm) and 12-18 in. across (30-45 cm). Will naturalize over time into large clumps.
  • Thrives in part shade, in humus-rich, acidic, moist, well-drained soils. Plant in soil that is not too acidic and maintain moisture throughout the growing season, without letting soil get soggy.
  • Ideal for shady borders, woodland gardens, cottage gardens, rock gardens or along streams or ponds.
  • Virtually pest and disease free. Deer resistant.
  • Propagate by seed or root division.
  • Native to eastern North America, from New England west to Saskatchewan, south to Georgia and Arkansas..

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Requirements

Hardiness 3 – 7
Plant Type Perennials
Plant Family Gentiana - Gentians
Exposure Partial Sun
Season of Interest Summer (Late)
Fall
Height 1' – 2' (30cm – 60cm)
Spread 1' – 2' (30cm – 60cm)
Spacing 18" (45cm)
Water Needs Average
Maintenance Low
Soil Type Clay, Loam, Sand
Soil pH Acid, Neutral
Soil Drainage Moist but Well-Drained
Characteristics Showy
Native Plants United States, Midwest, Illinois, Indiana, Iowa, Michigan, Minnesota, Missouri, Nebraska, North Dakota, Ohio, South Dakota, Wisconsin, Northeast, Connecticut, Delaware, Massachusetts, Maryland, New Hampshire, New Jersey, New York, Pennsylvania, Rhode Island, Vermont, Rocky Mountains, Colorado, Southeast, Kentucky, Virginia, West Virginia
Tolerance Clay Soil, Deer
Garden Uses Beds and Borders, Ponds and Streams, Underplanting Roses and Shrubs
Garden Styles Gravel and Rock Garden, Informal and Cottage

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habrda / 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
Plant Type Perennials
Plant Family Gentiana - Gentians
Exposure Partial Sun
Season of Interest Summer (Late)
Fall
Height 1' – 2' (30cm – 60cm)
Spread 1' – 2' (30cm – 60cm)
Spacing 18" (45cm)
Water Needs Average
Maintenance Low
Soil Type Clay, Loam, Sand
Soil pH Acid, Neutral
Soil Drainage Moist but Well-Drained
Characteristics Showy
Native Plants United States, Midwest, Illinois, Indiana, Iowa, Michigan, Minnesota, Missouri, Nebraska, North Dakota, Ohio, South Dakota, Wisconsin, Northeast, Connecticut, Delaware, Massachusetts, Maryland, New Hampshire, New Jersey, New York, Pennsylvania, Rhode Island, Vermont, Rocky Mountains, Colorado, Southeast, Kentucky, Virginia, West Virginia
Tolerance Clay Soil, Deer
Garden Uses Beds and Borders, Ponds and Streams, Underplanting Roses and Shrubs
Garden Styles Gravel and Rock Garden, Informal and Cottage

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Guides with Gentiana - Gentians

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