Voluminous flower spikes feature densely-packed, dark purple-blue flowers, characterised by a unique 'bee shaped' centre. Provides height and colour within borders above a finely cut mound of dark green foliage. Supports bees and other pollinating insects
1-1.5 metres
0.5-1 metres
| Season | Stem | Flower | Foliage | Fruit |
|---|---|---|---|---|
| Spring | ||||
| Summer | ||||
| Autumn | ||||
| Winter |
Grow in a fertile, well-drained soil in full sun, away from windy sites. Apply a balanced liquid every couple of weeks in the growing season. For strong flower spikes thin shoots when 7cm leaving a minimum of 2-3 shoots on young plants and 5-7 shoots on established plants. See staking perennials and delphinium cultivation for further advice
Propagate by seed sown between 15-20°C in early spring
Deadhead by cutting spent flower spikes back to small flowering side shoots. Cut down all growth to ground level after it has withered in autumn
May be susceptible to aphids, earwigs, delphinium leaf miner, delphinium moth caterpillars, slugs, snails and caterpillars
May be susceptible to powdery mildews, delphinium black blotch, crown rot and viruses