20 - 30 cm
April - June
humus-rich, moist, well drained, average
acid - neutral - alkaline
Trollius is a small genus of around 30 species in the buttercup family, Ranunculaceae, distributed around temperate regions in the northern hemisphere, the greatest number of species in Asia. They grow in moist soil in their native habitats, but can grow in any garden soils.
Division in spring or fall.
Seed - sown in September - November.
Seed lightly covered and stored at 20°C (68°F) for 2 weeks and then stored outside until germination. The seed needs temperatures below freezing, so refrigeration isn't enough.
A low growing perennial that needs a fairly sunny position in moist soil. The flowers open once the flower stalks are out of the ground, so it's very low growing to begin with, but the flower stalks can eventually reach 30-40 cm.