From the Monticello website:
Blackberry Lily is a hardy, robust perennial known to Jefferson as "Chinese Ixia." He planted this showy member of the Iris family in an oval flower bed in 1807. It is naturalized at Monticello today, perhaps from an earlier Jefferson planting. Orange flowers, spotted with red, bloom on three-foot stalks in midsummer. Ornamental, blackberry-like seeds, which appear in fall, are not edible. Sow during growing season in a sunny, well-drained site. USDA Zones 5-9.

currently 3 seedlings