Gentiana clausa Raf.
Bottle gentian, Blind gentian
Gentianaceae (Gentian Family)
USDA Symbol: GECL
Paired, lance-shaped leaves line the usually unbranched, 2 ft. stem. Small groups of blue flowers, which always remain closed, occur in tight clusters at the top of the stem and, in well-developed plants, from lower leaf axils. Upper flowers are subtended by a whorl of leaves.
The Bottle Gentian is a member of the family Gentianaceae. Gentians are leafy herbs, commonly with showy bell- or trumpet-shaped flowers blooming in a branched cluster. There are about 70 genera and 1,100 species that occur in many different habitats in temperate and subtropical regions. Some gentians are cultivated as ornamentals.
From the Image Gallery
Bloom InformationBloom Color: Blue
Bloom Time: Aug , Sep , Oct
DistributionUSA: CT , DC , MA , MD , ME , NC , NH , NJ , NY , OH , PA , RI , TN , VA , VT , WV
Native Distribution: ME to NY, s. to NJ & along mts. to NC
Native Habitat: Wood borders; stream banks
Growing ConditionsWater Use: Medium
Light Requirement: Sun , Part Shade
Soil Moisture: Moist
Soil pH: Acidic (pH<6.8)
CaCO3 Tolerance: Low
Soil Description: Moist, rich soil.
Conditions Comments: Strong grower. A mulch of rotted leaves or compost in the spring is beneficial.
BenefitConspicuous Flowers: yes
Value to Beneficial InsectsSpecial Value to Bumble Bees
This information was provided by the Pollinator Program at The Xerces Society for Invertebrate Conservation.
PropagationDescription: Propagate by seed or divisions of the root crown. Divide root crowns in fall or early spring and plant 1 ft. apart. Be sure to include a large ball of soil aroung the division when you lift it out. This protects the brittle crown. Germination of seed
Seed Collection: The dried corolla remains intact around the brown capsule as it matures. Seeds are collected just before the first hard freeze when the capsules begin to open and curl back. Tap seed out and store dry in sealed, refrigerated containers for up to four years.
Seed Treatment: Stratify 3 months at 40 degrees.
Commercially Avail: yes
National Wetland Indicator Status
From the National Suppliers DirectoryAccording to the inventory provided by Associate Suppliers, this plant is available at the following locations:
Edge of the Woods Native Plant Nursery - Orefield, PA
Toadshade Wildflower Farm - Frenchtown, NJ
From the National Organizations DirectoryAccording to the species list provided by Affiliate Organizations, this plant is on display at the following locations:
Mt. Cuba Center - Hockessin, DE
Additional resourcesUSDA: Find Gentiana clausa in USDA Plants
FNA: Find Gentiana clausa in the Flora of North America (if available)
Google: Search Google for Gentiana clausa
MetadataRecord Modified: 2013-06-06
Research By: TWC Staff