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'Arch Duke'
| 'Arch Duke' | |
| Hardiness | Hardiness zone 3-8 |
| Flower color | Pale lilac |
| Height | 100 cm |
| Flower season | June - July |
| Special remarks | Leaf: Large grey green with white powdered backside |
| 'Arch Duke' | |
| Hardiness | Hardiness zone 3-8 |
| Flower color | Pale lilac |
| Height | 100 cm |
| Flower season | June - July |
| Special remarks | Leaf: Large grey green with white powdered backside |