This cultivar is part Mildred Seaver's  "Sea Series" of hostas. An open-pollinated seedling of H. 'Sea Sprite' was registered by Mildred in 1981. It forms a low, dense mound with narrow, heavily rippled, faintly corrugated foliage with average substance. Bright purple flowers open in July.

According to The Hostapedia by Mark Zilis (2009), "...improves on 'Chartreuse Wiggles' and other narrow-leaved, golden H. sieboldii types with its more regular rippling and better substance."

Seedlings include H. 'Excuse Me'.