Delphinium 'Et Dlp 824'
A prolific herbaceous perennial with semi-double, white flower spires that stand tall above a mound of delicately-lobed pale green foliage. Flowers appear from early summer, supporting a range of bees and other pollinating insects. Pairs well with other large blooms including roses, peonies and foxgloves
0.5-1 metres
0.1-0.5 metres
| Season | Stem | Flower | Foliage | Fruit |
|---|---|---|---|---|
| Spring | ||||
| Summer | ||||
| Autumn | ||||
| Winter |
Plant in an open spot with fertile, freely-draining soil and protect the young foliage against slug and snail damage. Add canes or stakes to support the plant as soon as foliage begins to appear, tying in as the plant grows. Apply a seaweed or balanced liquid fertiliser every 2-3 weeks. To encourage strong flower spikes thin shoots when 7cm high, 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 at 15-20°C in early spring
Deadhead by cutting spent flower spikes back to small flowering side shoots. This will help encourage a second flush of flowers. 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.