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. |
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