Large round heads of deep purple flowers.
|Flowering period: May to June.|
|Growing conditions: Full sun in well-drained soil.|
|Typical mature height: 30 inches ( 76 cms )|
|Hardiness: Very hardy. Should withstand severe winters and exposed sites.|
|This plant has been awarded the Royal Horticultural Society's Award of Garden Merit (AGM).|
|This is an insect-friendly plant which gives bees and other insects easy access to nectar and pollen.|