Oofuna Botanical Garden in Japan, this non-registered cultivar is of unidentified parentage but has
H. sieboldii in its background.
It is a small size hosta about 9 inches high by 24
inches wide with golden-yellow foliage. The leaves are
elliptic, narrow, wavy, smooth and have thin substance.
Mikiko Lockwood in an article on The Hosta Library titled,
A Little About Japanese Hosta Terms defines the term koba as small leaf,
'Koba Giboshi' or