This large, golden yellow hosta is a non-registered cultivar
Diana Grenfell and
Roger Grounds of
It has nearly round leaves that are moderately
corrugated. Lavender flowers bloom in July on scapes
about 25 inches tall followed by viable seeds.
The Hostapedia by Mark Zilis (2009), "...probably
'Semperaurea' × 'Tokudama Flavocircinalis'..."
"Plant is named for Apple Court, the garden of
Grenfell and Grounds, Lymington, Hampshire, U.K."