Hosta Dilithium Crystal forms a small mound of about 5"-7" with a spread of 12"-18" at maturity. Another of the 'Star Trek' collection. Hosta Dilithium Crystal is a small size Hosta of unidentified parentage, from Dirk Dupre of Belgium. 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 summer. Prefers a semi shaded site where that make excellent plants for containers. Not good with sun tolerance nor slug resistance.