Family: Gentianaceae (jen-shun-AY-see-ee) (Info)
Genus: Gentiana (jen-shee-AN-uh) (Info)
Species: douglasiana (dug-lus-ee-AN-uh) (Info)
Category:
Annuals
Height:
6-12 in. (15-30 cm)
Spacing:
12-15 in. (30-38 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)
Sun Exposure:
Full Sun
Sun to Partial Shade
Danger:
Unknown - Tell us
Bloom Color:
Dark Blue
Blue-Violet
Bloom Time:
Mid Summer
Late Summer/Early Fall
Foliage:
Herbaceous
Smooth-Textured
Other details:
This plant is attractive to bees, butterflies and/or birds
Requires consistently moist soil; do not let dry out between waterings
Soil pH requirements:
5.6 to 6.0 (acidic)
6.1 to 6.5 (mildly acidic)
Patent Information:
Unknown - Tell us
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
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