This cultivar which is a cross between H. 'Swoosh' × H. 'Hadspen Heron' was registered by Roy Herold of Massachusetts in 1999. It forms a medium size (12 inches high by 24 inches wide) mound of foliage with prominent waves and margins that may streak. Medium purple flowers bloom from July into August followed by viable seeds.

The Hostapedia by Mark Zilis (2009) states "The rapidly rising popularity of 'Dark Star' is not surprising considering its striking combination of wavy, white-margined foliage, dense mound habit and good growth rate."

The New Encyclopedia of Hostas by Diana Grenfell (2009) states: "Increases rapidly, providing excellent ground cover. Also good in containers...Leaves widen with maturity so that young plants and mature plants are hardly recognizable as the same hosta."