Amsonia illustris, commonly known as Ozark blue star, is a species of flowering plant native to the central United States. It belongs to the family Apocynaceae. This perennial plant is prized for its striking blue flowers that bloom in late spring to early summer. The flowers are star-shaped, hence the common name "blue star."
Amsonia illustris typically grows in clumps and reaches heights of about 2 to 3 feet (60 to 90 cm). It has narrow, lance-shaped leaves that are green during the growing season and turn golden-yellow in the fall, providing additional ornamental interest.
This plant prefers full sun to partial shade and well-drained soil. It is relatively low-maintenance once established and is often used in perennial borders, rock gardens, and naturalized areas. It also attracts butterflies and other pollinators to the garden. Overall, it's a lovely addition to any landscape, offering beauty and ecological benefits.