Hosta Dilithium Crystal will form a small mound of  5"-7" in height, with a spread of up to 18" at maturity. Another of the 'Star Trek' collection. Hosta Dilithium Crystal is a small size Hosta of unidentified parentage. A small, easily grown Hosta. Narrow bluish green leaves, on dark red petioles, that are slightly wavy and form dense clumps. Small spires of purple, bell like flowers held on 12" scapes, during the from late July & well into August. Prefers a semi shaded site where that make excellent plants for containers. Not good with sun tolerance nor slug resistance.