Culture: Easily grown in average, dry to medium, well-drained soils in full sun. Tolerant of poor soils, drought, summer heat and humidity. Intolerant of wet soils in winter.
Noteworthy Characteristics: Liatris aspera, commonly called rough blazing star, is an upright, clump-forming, native perennial which typically grows 2-3′ tall (less frequently to 5′) and which commonly occurs in dryish soils on prairies, open woods, glades, meadows and along roads and railroad tracks. Features rounded, fluffy, deep rose-purple flower heads (each 3/4″ across) which are crowded into long, terminal flower spikes atop erect, rigid, leafy flower stalks. Stalks arise from basal tufts of rough, very narrow, lance-shaped leaves (to 12″ long). Flowers open somewhat at the same time, which makes this species a particularly good fresh cut flower for floral arrangements. Blooms later (late summer to fall) than most other Liatris species. Liatris belongs to the aster family, with each flower head having only fluffy disk flowers (resembling “blazing stars”) and no rays. This species is distinguished from other Liatris species by its rough appearance and rounded, outflaring involucral bracts.
Genus name of unknown origin. Specific epithet means rough.
Problems: No serious insect or disease problems. Taller spires may need staking.
Garden Uses: Perennial borders, cutting gardens, native plant gardens or naturalized areas.
All plant information courtesy of the Missouri Botanical Garden
Liatris aspera (Button or Rough Blazing Star) matures to 3′ in height and has purple flowers. This Liatris prefers medium to dry soil conditions and will bloom for many weeks in the months of July to October. It grows best in full sun but can tolerate a fair amount of shade.
Butterflies, hummingbirds, and bees are greatly attracted to the flowers of Liatris aspera. Like all Liatris species, Button Blazing Star is great in flower arrangements both as fresh and dried as the flowers keep their purple color. Many insects visit the flowers of Liatris aspera
Price range: $6.00 through $12.00
