This cultivar is the result of a cross of an unidentified seedling x H. 'White Christmas' that was registered by Wm and Eleanor Lachman of Massachusetts in 1987. The mound is a small size hosta about 10 inches high with a spread of 23 inches. Its leaves have a creamy white center with dark green margins. Purple flowers bloom from late July into August followed by viable seeds.

According to The Hostapedia by Mark Zilis (2009), "A well-grown specimen of 'Calypso' is truly a magnificent sight! The sharp contrast between the white center and dark green margin on long leaves that are folded lengthwise produces a striking appearance."

The Book of Little Hostas by Kathy and Michael Shadrack (2010) says: "Provides a good color contrast in raised beds, woodland walks, and large containers."

The New Encyclopedia of Hostas by Diana Grenfell (2009) states in its Hosta Hybrids for Connoisseurs chapter: "...it will not thrive as a garden plant and the leaves will probably scorch. Prized as a breeding plant, however."

In Greek mythology, Calypso was a freshwater nymph.