This perennial dies back to below ground level each year in autumn, then fresh new growth appears again in spring.

• Position: full sun or partial shade
• Soil: fertile, well-drained soil
• Rate of growth: average to fast growing
• Flowering period: June to September
• Hardiness: fully hardy
  
  Larger than average (4-5cm diameter) flowers appear for many months from early summer above the clumps of yellow-green foliage. Each saucer-shaped blue bloom has a network of magenta coloured veins, which radiate out from the near-white centre. These provide a wonderful contrast to the colourful foliage.
  
  
• Garden care: Carefully weed by hand as hoeing can break rhizomes, which are very close to the surface. Lift and divide large colonies in spring.