This subspecies has finely cut glaucous foliage, forming a billowing mound. During spring arises a vast flower stalk, with a glaucous-purple bloom, topped with umbels of sulphur-yellow flowers. Attractive to wildlife.
This subspecies has finely cut glaucous foliage, forming a billowing mound. During spring arises a vast flower stalk, with a glaucous-purple bloom, topped with umbels of sulphur-yellow flowers. Attractive to wildlife.
| Aspect | Full sun |
| Flower Colour | Yellow |
| Flowering Period | Jun | Jul |
| Foliage | Not evergreen |
| Goes Well With | Euphorbia, Salvia, Verbascum |
| Growth Habit | Clump-forming |
| Hardiness | Fully hardy |
| Height | 4m |
| Soil | Most types |
| Spread | 80cm |