A sport of H. 'Blue Angel', this
cultivar is a non-registered hosta from
Barry Sligh of Taunton Gardens in New Zealand. The large size hosta grows to about 20 inches high and spreads to 46 inches in width.
It produces near white flowers from late June into July.
The Hostapedia by Mark Zilis (2009), "I have not been able to discern any difference between
'Duke of Cornwall' and 'Earth Angel'.
Similar hostas include
H. 'Angel of Beauty'.