|Violacea is a hardy, clump-forming perennial with corm-like rhizomes and narrow, linear, grayish green leaves. Produces large, terminal umbels of scented lilac flowers. In general, Tulbaghia is a clump forming perennial, with narrow leaves, long stems topped with clusters of star-shaped flowers. In very mild climates, they are evergreen, frost damage occurs at 20 to 25F. They need full sun and regular moisture.