With
Hosta
nigrescens in
its background this cultivar has been around for a long time in
Japan. It was registered by
Peter Ruh
in 2002. A semi-upright mound, it grows to
28 inches high and 5 feet wide. The foliage is cupped,
moderately corrugated and has thick substance. It bears lavender
flowers.
According to
The Hosta Handbook by
Mark Zilis (2000), this cultivar is "...named for the Tenryu River
(in Japan) that is the same as or a seedling of
Hosta nigrescens."
Seedlings include H. 'Allegheny
River', H. 'Presence of Mind' and H. 'Tenny Up'.