This plant was labeled
'Rising Tide' but that cultivar is a large, blue-green cultivar
out of H. 'Sieboldiana'
so we suspect that this hosta is actually 'Rising Surf'.
'Rising Surf' is a non-registered, medium size plant from
Peter Ruh of Ohio. It is an H. 'Fortunei' type plant that bears pale lavender flowers in late July.