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Herbaceous PerennialAnnual Biennial

Delphinium grandiflorum

large-flowered delphinium

A short-lived perennial, usually grown as an annual, with foliage divided into narrow lobes. Single, spurred flowers in blue, purple or white are produced in open sprays in early summer

Other common names
bouquet larkspur
large-flowered larkspur
see moreSiberian larkspur
Synonyms
Delphinium chinense
Delphinium grandiflorum var. chinense
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Size
Ultimate height
0.1–0.5 metres
Time to ultimate height
1 year
Ultimate spread
0.1–0.5 metres
Growing conditions
Chalk
Clay
Loam
Sand
Moisture
Moist but well–drained
pH
Acid, Alkaline, Neutral
Colour & scent
StemFlowerFoliageFruit
Spring Green
Summer Blue Purple White Green
Autumn
Winter
Position
  • Full sun
Aspect

South–facing or West–facing or East–facing

Exposure
Sheltered
Hardiness
H7
Botanical details
Family
Ranunculaceae
Native to GB / Ireland
No
Foliage
Deciduous
Habit
Bushy
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

Correct

Plant range
E & N Asia

How to grow

Cultivation

Grow in a fertile, well-drained soil in full sun. See staking: perennials and delphinium cultivation for further advice

Propagation

Propagate by taking pencil-thick basal cuttings in early spring or by division

Suggested planting locations and garden types
  • Cottage and informal garden
  • Flower borders and beds
Pruning

Deadhead spent flower spikes. After flowering, cut down all growth to ground level

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, crown rot and viruses

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