In 1978,
Paul Aden
registered
this cultivar as a hybrid of H. 'Flamboyant' x H. 'Estelle
Aden'. The medium to large plant grows to about 18 inches in
height and spreads to 50 inches in width. In the spring, the
plant is a chartreuse color but the leaf margins change to gold
by midsummer. The leaves are ovate shaped, slightly corrugated
and wavy with a slightly shiny underside. In late June into
July, pale lavender flowers bloom on scapes just above the
mound.
According to
The Hostapedia by Mark Zilis
(2009), "Note: at one time 'Blue Moon' was
known as 'Halo'."
Similar
cultivars include H. 'Connie'.
Sports include H. 'Archangel'.
Seedlings include H. 'Dixie Joy'.
Photo
from the 2011
