Hosta Asian Splash Mountain is a medium size Hosta that reaches a height of 38cm-45cm and a mature width of up to 75cm. It has blue-green leaves that are narrow, wavy at the edges, upright, and cascade downwards, similar to Hosta Neptune. The foliage is elongated, narrowly ovate, and pointed at the tips. Lavender flowers appear on scapes up to 75cm tall from late July to August.