Knapweed

Centaurea macrocephala

• Position: full sun
• Soil: well-drained soil
• Rate of growth: average
• Flowering period: July and August
• Flower colour: golden yellow
• Other features: the flowers are attractive to butterflies and bees
• Hardiness: fully hardy
  
  Spectacular, golden-yellow thistle like flowers on stiff stems in mid- and late summer and lance-shaped, mid-green leaves. This bold plant is ideal for providing vertical interest in a sunny, well-drained herbaceous border. Best on poor soil, the dried seed heads are excellent for use in flower arrangements.
  
  
• Garden care: Lift and divide large clumps every three years in spring.