Kovalcsik of Michigan
this upright growing cultivar is a hybrid of an unnamed H.
'Sieboldiana'-type hosta ×
H. 'Mr Black'. It is a medium size plant about 14
inches high by 28 inches wide with dark green foliage.
The leaves are nearly round, moderately cupped and
corrugated with deeply impressed veins. Newer foliage is
deeply cupped while more mature leaves are slightly
domed. The petioles have a dark red coloration at the
base. Medium lavender flowers with a center stripe bloom
from late August into September on scapes which have a
pinkish-purple color at the base. It produces viable
seed in dark green pods.
registration materials state: "Sturdy petioles
display glaucous leaves that darken to deep forest
green. Striking symmetrical form...becomes deep forest
green by mid-season."
According to Joanna, "The cross produced a beautiful,
round-leaf seedling on very stiff, upright petioles. The
leaves are glaucous top and bottom, but as the glaucous coating
fades from summer heat, the dark coloration of the
leaves is revealed. By end-of-season the leaves are
green-black... very attractive and eye-catching."