This is a plant that at one time was thought to be a naturally
occurring botanical variety of the species
H. crispula. It was then
re-designated as a cultivar status probably because of lack of
evidence that it came from the wild. The plant forms a large size mound whose
foliage is medium green in color and slightly rippled. It bears
very pale lavender flowers in July.
The Hostapedia by Mark Zilis (2009), "...is certainly the equal of many other large-size
green-leaved cultivars. It makes an excellent background plant
or large ground cover."
all-green form of the species, but the leaf margin
is not as undulate. Aoba in Aoba Sazanami
Gibōshi means green leaf, and the name indicates
that a green-leaved form also exists in Japan.
Maekawa considered H. kiyosumiensis to be
very closely related to H. 'Crispula' but the
latter has a taller scape and a much higher flower