Hosta Dilithium Crystal will form a small mound ranging from 12cm to 18cm in height, with a spread of up to 45cm at maturity. It is part of the 'Star Trek' collection. Hosta Dilithium Crystal is a small-sized Hosta with unidentified parentage. This plant is easy to grow and features narrow bluish-green leaves on dark red petioles, which are slightly wavy and form dense clumps. Small spires of purple, bell-like flowers are held on 30cm scapes from late July well into August. It prefers a semi-shaded site, making it an excellent choice for containers.