Crocus vernus (Spring Crocus, Giant Crocus) is a species in Family Iridaceae, native to the Alps, the Pyrenees, and the Balkans. Its cultivars and those of Crocus flavus (Dutch Crocus) are used as ornamental plants. The Dutch Crocusses are larger than the other cultivated crocus species (e.g., Crocus chrysanthus). Depending on the year, Crocus vernus starts flowering about the same time or up to 2 weeks after Crocus chrysanthus (Snow Crocus) starts flowering. Height: 4–6" (10–15 cm).
Examples: ‘Flower Record’ (Blue), ‘Jeanne d’Arc’ (Glistening white with an interior, dark purple base), ‘Pickwick’ (violet mauve, striped), ‘Purpurea Grandiflora’ (deep purple), ‘Queen of Blues’ (Ageratum-blue with paler margins and a dark base), ‘Remembrance’ (dark blue and purple), ‘Vanguard’ (silvery blue/violet, light purple), Silver Coral (White, purple base), Grand Maitre (blue)