Robyn Duback registered this
H. 'Sieboldiana' in its background in 1998. It grows to around 20 inches in height and 4 feet wide. The
leaves are broadly ovate, cupped and have thick substance. Its
near white flowers bloom from late June.
The Hostapedia by Mark Zilis (2009), "It has grown larger than her
The American Hosta Society registration lists, so I'm not sure of its ultimate size."
Similar cultivars include H. 'Samual