Description
(Tsumaore Gasa)
In this cultivar the calyx is elongated with reddish green stripes, the petals are also elongated and they are narrow with pointed tips which are curved internally and folded over into a spatula shape. The flowers present over foliage which is similarly slashed and elongated, but which is compressed into a delightful ruff at flowering time, though it elongates and presents more normally after.
Tsumaoregasa is a Japanese farmers cap made of rush, used when working in fields. It is wide, round and flat.
Gardening practice is to call all Japanese cultivars amurensis though it is more correctly “amurensis of Horticulture”. Very few of the clones are actually amurensis proper, most are selected, clonal hybrids involving multiflora and ramosa. In the case of Tsumaoregasa it appears that it is a pentaploid hybrid, but it is one with high pollen fertility according to scientific studies on the genus.
They are all very early-flowering plants for a damp, humus-rich but well-drained, lightly-shaded spot. Adonis resent transplanting more than most other Ranunculaceae, a family notorious for their dislike of being moved. Please be patient with them (and with us) as this is down to evolution, not the nurseryman.
Introduced to our lists October 2021
