A large genus of the Buttercup family to which they bare little resemblance. All have delicate ferny foliage, often mistaken for aquilegia and vary from border stalwarts to choice woodland plants. The taller forms are easy to cultivate in most soils of good health although T. aquilegifolium seems adaptable to a wide range of situations.

Once cut down the plant will not regrow until the following spring so just removing the spent flower head is sufficient and will help prevent self seeding.