This "Fortunei type" cultivar has
been around for a very long time. It was registered by the
American Hosta
Society
in 1987 as H. fortunei 'Aoki' but the name has been
changed after the monograph,
The Genus Hosta by G. Schmid
(1991), determined that
there really was no species called H. fortunei.
'Aoki' forms a 21 inch high mound
that spreads to about 52 inches in width. The dark green to
bluish green leaves have average substance and are not wavy or
corrugated. Funnel shaped, pale lavender flowers are borne in
late July.
According to
The Hostapedia by Mark Zilis
(2009), "...virtually indistinguishable
from 'Fortunei Hyacinthina'."
Similar cultivars include H. 'Simpers Blue Leaf' and H. 'Zager Blue'.
Several sports of this cultivar
have been developed including H. 'Alley Oop', H. 'Aoki
Variegated', H. 'Marla', H. 'Okaydokey', H. 'Okefenokee', H. 'Raindance'
and H. 'Sundance'.