Gentiana Species, Marsh Gentian
Gentianapneumonanthe

Family: Gentianaceae (jen-shun-AY-see-ee)
Genus: Gentiana (jen-shee-AN-uh)
Species: pneumonanthe (new-mon-AN-thee)

Synonym:Ciminalis pneumonanthe

Synonym:Dasystephana pneumonanthe

Synonym:Gentiana adrianii

Synonym:Gentiana pneumonanthoides

Synonym:Gentianusa pneumonanthe

Category
Ponds and Aquatics

Water Requirements
Very high moisture needs; suitable for bogs and water gardens

Sun Exposure
Full Sun

Foliage
Smooth

Foliage Color

Height
6-12 in. (15-30 cm)

Spacing
6-9 in. (15-22 cm)

Hardiness
USDA Zone 4a: to -34.4 °C (-30 °F)
USDA Zone 4b: to -31.6 °C (-25 °F)
USDA Zone 5a: to -28.8 °C (-20 °F)
USDA Zone 5b: to -26.1 °C (-15 °F)
USDA Zone 6a: to -23.3 °C (-10 °F)
USDA Zone 6b: to -20.5 °C (-5 °F)
USDA Zone 7a: to -17.7 °C (0 °F)
USDA Zone 7b: to -14.9 °C (5 °F)
USDA Zone 8a: to -12.2 °C (10 °F)
USDA Zone 8b: to -9.4 °C (15 °F)

Where to Grow

Danger

Bloom Color
Dark Blue

Bloom Characteristics

Bloom Size

Bloom Time
Mid Spring
Late Spring/Early Summer

Other details

Soil pH requirements
5.1 to 5.5 (strongly acidic)
5.6 to 6.0 (acidic)
6.1 to 6.5 (mildly acidic)

Patent Information

Propagation Methods
From seed; direct sow outdoors in fall
From seed; winter sow in vented containers, coldframe or unheated greenhouse
From seed; stratify if sowing indoors

Seed Collecting
Allow pods to dry on plant; break open to collect seeds