Overview

Delphinium 'Neptune' Lemoine is a clump-forming, upright herbaceous perennial in the genus Delphinium, part of the Ranunculaceae family, with divided green leaves foliage. Delphinium 'Neptune' Lemoine grows best in full sun, and tolerates loam soils and neutral pH. Its UK hardiness is rated H5. Suggested uses include beds, borders and cut flowers.

About

Delphinium 'Neptune' Lemoine is a herbaceous perennial cultivar of the Delphinium genus, known for its clump-forming, upright habit and divided green leaves. As a member of the Ranunculaceae family, it thrives in fertile, moist but well-drained loam soil with a neutral pH, ideally in full sun with shelter from the wind. Suitable for beds, borders, and cut flowers, it flowers in spring and summer. This cultivar is hardy to UK zone H5 and benefits from staking and mulching in spring, with propagation by basal cuttings in early spring.

Growing conditions

Best soil and position for Delphinium

Sunlight
Full sun
Soil type
Loam
Soil pH
Neutral
Soil moisture
Moist but well-drained
Aspect
South-facing, West-facing, East-facing
Exposure
Sheltered
UK hardiness
H5

Plant details

Delphinium 'Neptune' Lemoine size, habit and characteristics

Plant type
Herbaceous Perennial
Habit
Clump-forming, upright
Foliage
Divided green leaves
Suggested uses
Beds, borders, cut flowers

Care notes

Pruning and caring for Delphinium 'Neptune' Lemoine

Propagation
Basal cuttings in early spring
Pest resistance
Aphids, earwigs, delphinium leaf miner, delphinium moth caterpillars, slugs, snails, caterpillars
Disease resistance
Powdery mildews, delphinium black blotch, crown rot, viruses

Frequently asked questions

Where is the best place to plant Delphinium 'Neptune' Lemoine?

Delphinium 'Neptune' Lemoine prefers full sun. It suits sheltered positions.

What soil does Delphinium 'Neptune' Lemoine need?

Delphinium 'Neptune' Lemoine grows best in loam soil. It prefers neutral soil. Aim for soil that stays moist but well-drained.

Is Delphinium 'Neptune' Lemoine hardy in the UK?

Delphinium 'Neptune' Lemoine has an RHS hardiness rating of H5, meaning it is hardy in most of the UK, tolerating -15 to -10°C.

How do I propagate Delphinium 'Neptune' Lemoine?

Basal cuttings in early spring.

More in the Delphinium genus

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