Dark blue buds and flowers in late spring for more than 5 weeks. Blooms considerably longer and stronger than other Amsonias. Dark green leaves turn brilliant yellow in fall. Late to emerge in spring. Spreads by underground rhizomes. Deer resistant.
Prefers sun to light shade and moist to dry, well-drained soil. Tolerant of clay soil and drought. These ar low maintenance, native perennials that are long lived and great for the wildflower or mixed border.
Plants may be cut back hard after blooming to maintain shorter form and to promote reblooming.