Valerian

Centranthus ruber Albus

• Position: full sun
• Soil: well-drained, neutral to alkaline
• Rate of growth: fast-growing
• Flowering period: May to October
• Hardiness: fully hardy
  
  Airy clusters of white flowers appear from July to October on tall, fleshy stems with glaucous leaves. This white form of red valerian is long flowering and easy-to-grow and combines well with many different plants. It's ideal for a sunny wildflower or seaside garden with poor, but well-drained soil, or for growing between the cracks in walls. It self-seeds freely and prefers a chalky or alkaline soil.
  
  
• Garden care: Deadhead regularly throughout the summer to prolong flowering. In autumn cut the plant back down to the ground and compost the dead stems.