This perennial is semi-evergreen so it can lose some of its leaves in winter. In colder regions or more exposed gardens, it may lose them all, but then fresh new growth appears again in spring.

• Position: full sun
• Soil: fertile, moist, well-drained soil
• Rate of growth: average
• Flowering period: July to September
• Hardiness: hardy
  
  Evergreen and easy to grow, with an abundance of purple-black buds that open into vivid violet blooms. The long flowering period combined with good rebloom makes it ideal for providing long-lasting colour. Growing faster than other varieties, it will eventually reach around 60cm tall and 45cm wide. A perfect choice for perennial borders, patio pots or mixed containers, it is also noted for its resistance to crown rot (Erwinia).
  
  
• Garden care: Keep well watered during the growing season, applying a balanced liquid fertiliser each month from spring until the plant flowers. Towards the end of September ease back on the watering and feeding of plants in containers to allow the foliage to toughen up. In cold, exposed areas protect the crown of the plant with a deep, dry winter mulch.