John Machen, Jr of Mobjack Nurseries in Virginia registered this cultivar in 1994. It is a tetraploid sport of H. 'White Christmas' that forms a large size (25 inches high by 63 inches wide) mound. The leaves are ovate shaped, slightly wavy and smooth textured. Pale lavender flowers are produced on 42 inch tall scapes from mid-July into August. It is sterile and, therefore, does not set seeds.

According to The Hostapedia by Mark Zilis (2009), "It is an impressive plant, perhaps one of the best white-centered hosta cultivars. It makes a much larger mound with taller scapes than 'White Christmas'..."

From the Field Guide to Hostas by Mark Zilis (2014), "As its mother plant, 'White Christmas', fades into oblivion, 'Night before Christmas' continues to increase in popularity. The reason is simple: one grows, and the other does not."