dark purple knapweed
Centaurea atropurpurea
USDA zones5 to 9
SunNeeds full sun (6+ hours)
WaterNeeds dry soil
Size3 to 4 feet tall12 to 24 inches wide
- Bloom season
- Summer
- Soil types
- Sand, loam, chalk
- Soil pH
- Acid, alkaline, neutral
Garden uses
Attracts
Notes
Dark purple knapweed (Centaurea atropurpurea) is a perennial for borders and low maintenance gardens. It is hardy to USDA zone 5, or down to -20°F (-29°C). This plant likes full sun and dry, sandy, loamy, or chalky soil. It blooms from early to late summer, draws butterflies and bees, and tolerates drought. Deer and rabbits tend to browse other plants first. Its tall stems reach about 35 to 47 inches.
Pairs well with Avens, Upright myrtle spurge, Autumn moor grass, and Elfin mother of thyme.