An herbaceous perennial, forming a clump to around 1.2m high, with upright stems bearing leaves divided into three clover-like leaflets. Tall clusters of soft lavender-blue flowers are produced in late spring or early summer, followed by dark grey seed pods
1-1.5 metres
0.5-1 metres
| Season | Stem | Flower | Foliage | Fruit |
|---|---|---|---|---|
| Spring | ||||
| Summer | ||||
| Autumn | ||||
| Winter |
Thrives in deep, well-drained, preferably sandy soil in an open, sunny position. Plants can be slow to establish, and dislike being disturbed, but mature plants have good drought tolerance
Propagate by softwood or semi-ripe cuttings. Hybrid cultivars will not come true from seed
No pruning required, though plants can be trimmed back after flowering to maintain a compact shape, unless seed pods are required
Generally pest-free
Generally disease-free