This white edged sport of Hosta sieboldiana
'Northern Halo' was registered by Van
Wade in 1999.
It forms a large (24 inches high) mound and has heavy substance to its leaves.
The near white flowers are borne in June to July. They have a
pale lavender stripe on the petals.
According to
The Hostapedia by
Mark Zilis
(2009), "...'American Halo' was selected as an improved form
of Hosta sieboldiana 'Northern Halo', a much-maligned cultivar with
several divergent clones."
Similar cultivars include Hosta sieboldiana 'Northern
Exposure'.