leichtlinii 'Blue Danube' - unusual color of very dark blue flowers; 30"-36".
Tall spikes with many starry flowers with long, upright swordlike leaves; native to America, it was sometimes used by the Indians as a food crop; tolerates damp meadows and pond edges as well as heavy clay soils; seems to bloom well in either part shade or full sun; late spring/early summer; zones 3-8.
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