This cultivar is a sibling of H. 'Sunny Smiles'. It is a hosta of unidentified parentage originated by Cynthia Tompkins around 1946. It was registered on her behalf by Peter and Jean Ruh of Ohio in 2002.

'Snowbound' is a medium size (14 inches high by 39 inches wide) hosta with green foliage that has a creamy yellow to white marginal variegation. The leaves are ovate, moderately corrugated and slightly wavy. Lavender flowers bloom in July.

According to The Hostapedia by Mark Zilis (2009), "Cynthia Tompkins was way ahead of her time, considering that 'Snowbound' and many of her other cultivars predated the formation of The American Hosta Society by more than thirty years. In fact, one could make a case for her being considered the first American hosta hybridizer. The only difference between her and people like Frances Williams, Elizabeth Nesmith, and Eunice Fisher was the lack of publicity for her plants."