Gentiana Species, Willow Gentian
Gentianaasclepiadea

Family: Gentianaceae (jen-shun-AY-see-ee)
Genus: Gentiana (jen-shee-AN-uh)
Species: asclepiadea (ass-kle-pee-AD-ee-uh)

Synonym:Coilantha asclepiadea

Synonym:Dasistepha asclepiadea

Synonym:Gentiana ramiflora

Synonym:Gentiana schistocalyx

Synonym:Gentianusa asclepiadea

Category
Alpines and Rock Gardens

Water Requirements
Requires consistently moist soil; do not let dry out between waterings

Sun Exposure
Sun to Partial Shade

Foliage
Grown for foliage

Foliage Color
Blue-Green

Height
18-24 in. (45-60 cm)

Spacing
15-18 in. (38-45 cm)

Hardiness
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)

Where to Grow

Danger

Bloom Color
Medium Blue

Bloom Characteristics

Bloom Size

Bloom Time
Mid Summer
Late Summer/Early Fall

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
Properly cleaned, seed can be successfully stored