The Hosta Kempen Sky High will form an upright mound reaching 30cm-40cm in height, with a spread of up to 30cm at maturity. This variety is known for its aesthetically pleasing appearance. It features very upright blue leaves with substantial texture, which are inwardly folded, twisted, and wavy. The leaves exhibit a blue-green colour with a waxy coating on both sides. Pale lavender flowers will bloom on 50cm scapes with blue legs during July and August. Additionally, the Hosta Kempen Sky High demonstrates resistance to slugs and tolerance to sunlight.