30 - 40 cm
sun - partial shade
evenly moist, well drained, humus rich
acid - neutral - alkaline
Dodecatheon, is a small genus of similar species in the primrose family, Primulaceae, closely related to primroses, Primula. The species are all very similar and difficult to identify. All are native to N-America and some also to NE-Asia. They have a basal clump of leaves and the flowers have distinctive sepals that are twisted backwards. They need moist, fertile soil and can tolerate some shade.
Division in spring.
Seed – needs cold stratification, best sown in September - November.
Seed just covered and stored at 20°C (68°F) for 6 weeks. If some seeds germinate, the seedlings should be transplanted and then the seed tray should be stored outside until spring. Germination can be slow, it could germinate a year later so the seed should not be discarded prematurely. Optimum germination temperature is 5-12°C (40-55°F).
Needs evenly moist, well drained soil.