Trichostema setaceum, commonly known as narrowleaf bluecurls, is an annual herb native to the southeastern United States, particularly found in pine flatwoods, sandhills, and rocky uplands. It is adapted to well-drained, sandy or rocky soils and thrives in full sun to part shade. This plant typically reaches up to 20 inches in height and produces striking purple-blue flowers with distinctive, long, curled stamens that extend beyond the petals, blooming from late summer to fall (September to October). The flowers are highly attractive to bees and other pollinators.

Narrowleaf bluecurls are valued for their ornamental flowers and are used in wildflower gardens, native plant landscapes, and restoration projects. They require minimal maintenance once established, needing little water and no fertilization, making them suitable for xeriscaping. Despite its beauty, it is listed as endangered in Kentucky, New York, Ohio, and Pennsylvania, and critically imperiled in Missouri, indicating its vulnerability in the wild. Gardeners interested in conservation may choose to cultivate this species to support its preservation.CC BY-SA 4.0