This is the result of crossing H. 'Niagra Falls' × a seedling (H. 'Silver Bowl' × H. 'Muriel Seaver Brown'). It was registered by
Olga Petryszyn of Indiana in 1998. The
plant forms a giant size mound about 28 inches high with a spread of 60
inches. Its leaves are heavily rippled,
sometimes unruly and convexly cupped with
deep lobes at the base. Near white flowers bloom from late June
Field Guide to Hostas by Mark Zilis (2014), "Its combination of dome-like leaf shape, attractive rippling,
and large mound size makes 'Hoosier Dome' a tremendous choice as
a specimen plant."
Similar cultivars include H. 'Sea Drift'.