A compact plant ideal for formal locations. Narrow leaves resemble pine needles and turn yellow in fall. Delicate blue flowers appear in early spring. Amsonia illustris and Amsonia tabernaemontana are similar species that prefer moister conditions.
The yellowed foliage of thread-leaved blue star in the fall maintains visual interest throughout the year. Photo by Nadia Navarrete-Tindall of the Native Plant Outdoor Laboratory at Lincoln University in Jefferson City, Missouri.