Description
The species is native to the prairies of North America. 'Indigo Sky' is a tall variety with deep blue flowers. Bushy growth habit. Blooms profusely with blue butterfly flowers in the first half of summer, later decorative fruits. Sunny location with good drainage. Tolerates drought and root competition. Height 110 cm
| Category: | perennials, NEW |
| Flower color: | purple, blue |
| Flowering time: | VI |
| Growing conditions: | full sun, sunny, dry, moderately humid, with good drainage |
| European climate zone: | Z4= -29 ...-35, Z5= -23 ...-29 |
| Height: | 75-100cm |
