Delphinium 'Green Twist' (New Millennium Series)
delphinium 'Green Twist'
An upright herbaceous perennial 0.8-1.4m high with divided green leaves and white flowers tinged with green or cream in early summer; delphiniums may be visited by bumblebees, especially long-tongued bumblebees
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Size
Ultimate height
1–1.5 metresTime to ultimate height
2–5 yearsUltimate spread
0.5–1 metresGrowing conditions
Moisture
Moist but well–drainedpH
Acid, Alkaline, NeutralColour & scent
Stem | Flower | Foliage | Fruit | |
Spring | Green | |||
---|---|---|---|---|
Summer | Cream Green White | Green | ||
Autumn | Green | |||
Winter |
Position
- Full sun
Aspect
West–facing or South–facing
Exposure
Sheltered Hardiness
H6Botanical details
- Family
- Ranunculaceae
- Native to the UK
- No
- Foliage
- Deciduous
- Habit
- Columnar upright
- Potentially harmful
- Humans/Pets: Harmful if eaten. Wear gloves and other protective equipment when handling. For further information and contact numbers regarding pets, see the HTA guide to potentially harmful plants
- Genus
Delphinium can be annuals, biennials or perennials, with palmately lobed basal leaves and showy bowl-shaped flowers in spikes, racemes or panicles
- Name status
Accepted
How to grow
Cultivation
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 (for more advice on support, see staking: perennials and delphinium cultivation for further advice
Propagation
Propagate by basal softwood cuttings in spring, or by division in early spring or early autumn
Suggested planting locations and garden types
- City and courtyard gardens
- Cottage and informal garden
- Cut flowers
- Flower borders and beds
Pruning
No pruning required except deadheading, cutting spent flower spikes back to flowering sideshoots, and cutting all growth stems down to ground level at the end of the growing season
Pests
May be susceptible to aphids, earwigs, delphinium leaf miner, delphinium moth caterpillars, slugs, snails and caterpillars
Diseases
May be susceptible to powdery mildews, delphinium black blotch, grey moulds, sclerotinia disease, crown rot, and cucumber mosaic virus
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