Zones: 4 to 9
Size: To 2' tall and 12" spread
Exposure: Sun, Filtered Sun
Blue flowers in spring, 6 blue tepals and a yellow eye. Leaves are grass-like. Tolerates a range of soils but prefers well-drained soil. Will self-seed in good growing conditions. Sheer after blooming to tidy foliage and prevent seeding.
Published in Gard. Dict. ed. 8 #2 in 1768.
Native to the eastern and central US, Canada and Mexico.