Culture
Easily grown in average, medium, well-drained soil in full sun to part shade. Prefers moist, loamy soils. Best fall foliage color usually occurs in full sun, but flowers generally last longer if given some afternoon shade in hot sun areas. Taller plants may appreciate some staking or support. If grown in too much shade, stems may open up and flop.
Noteworthy Characteristics
Amsonia is a genus of about 20 species native to light woodlands or grasslands of Southeast Europe, Turkey, Japan, and Central and Northeast United States. They are clump-forming perennials with narrow, alternate leaves and clusters of blue, 5-petaled flowers.
Genus name honors 18th-century Virginian physician Dr. Charles Amson.
'Starstruck' is a compact, hybrid selection of blue star that can reach up to 2' tall and spread to fill a 3' area. Terminal clusters of blue, star-shaped flowers bloom in late spring.
Problems
No known serious insect or disease problems. Deer tend to avoid this plant.
Uses
Borders, rock gardens, cottage gardens or open woodland areas. Best when massed.