An upright, clump-forming deciduous herbaceous perennial with green divided foliage and sturdy upright stems which produce dense racemes of semi-double, blue-dark purple flowers with a white eye in summer
0.5-1 metres
0.5-1 metres
| Season | Stem | Flower | Foliage | Fruit |
|---|---|---|---|---|
| Spring | ||||
| Summer | ||||
| Autumn | ||||
| Winter |
Grow in a fertile, well-drained but moisture-retentive soil in full sun, in a position sheltered from strong winds, and provide stakes or other supports. See staking perennials and delphinium cultivation for further advice
Propagate by basal softwood cuttings in spring, or by division in early spring or early autumn
No pruning required except deadheading, cutting spent flower spikes back to flowering sideshoots, and cutting all growth down to ground level at the end of the growing season
May be susceptible to aphids, earwigs, delphinium leaf miner, delphinium moth caterpillars, slugs and snails
May be susceptible to powdery mildews, delphinium black blotch, grey moulds, sclerotinia disease, crown rot and cucumber mosaic virus