Overview

Delphinium 'Polar Sensation' (Highlander Series) (d) is a clump-forming, upright herbaceous perennial in the genus Delphinium, part of the Ranunculaceae family, with divided green leaves foliage. Delphinium 'Polar Sensation' (Highlander Series) (d) 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 'Polar Sensation' (Highlander Series) is a herbaceous perennial cultivar within the Delphinium genus, known for its clump-forming, upright habit and divided green leaves. Like others in its genus, it produces prominent, bowl-shaped flowers arranged in spikes, making it suitable for beds, borders, and cut flowers. It thrives best in fertile, moist but well-drained loam soil with a neutral pH, in full sun and sheltered positions facing south, west, or east. 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 'Polar Sensation' (Highlander Series) (d) 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 'Polar Sensation' (Highlander Series) (d)

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 'Polar Sensation' (Highlander Series) (d)?

Delphinium 'Polar Sensation' (Highlander Series) (d) prefers full sun. It suits sheltered positions.

What soil does Delphinium 'Polar Sensation' (Highlander Series) (d) need?

Delphinium 'Polar Sensation' (Highlander Series) (d) grows best in loam soil. It prefers neutral soil. Aim for soil that stays moist but well-drained.

Is Delphinium 'Polar Sensation' (Highlander Series) (d) hardy in the UK?

Delphinium 'Polar Sensation' (Highlander Series) (d) 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 'Polar Sensation' (Highlander Series) (d)?

Basal cuttings in early spring.

More in the Delphinium genus

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