Delphinium 'Polar Sensation' (Highlander Series) (d) (Larkspur) — Clump-forming, upright

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 an herbaceous perennial in the Ranunculaceae with an upright, clump-forming habit and divided green leaves. It flowers from June to August. The plant favours full sun in a neutral loam that stays moist but drains well and performs best in a sheltered, south-, west- or east-facing position. Use it where upright stems and long-flowering impact are needed, including cut-flower production.

About the genus

Delphinium is a genus of about 300 species of annual and perennial flowering plants in the family Ranunculaceae, native throughout the Northern Hemisphere and also on the high mountains of tropical Africa. The genus was erected by Carl Linnaeus.

Wikipedia contributors, "Delphinium", CC BY-SA 4.0 — Delphinium

In the garden

Delphinium 'Polar Sensation' (Highlander Series) is a clump-forming, upright herbaceous perennial within the Ranunculaceae and is grown for its summer display. Flowering runs from June to August. The plant's divided green leaves form the basal clump that carries the flowering stems through the summer months. Plant into a free-draining loam with neutral pH in a site that receives full sun and is sheltered from strong winds; south-, west- and east-facing aspects are all suitable. Keep the rootzone moist but avoid waterlogging, as the combination of steady moisture and good drainage gives the best performance. The UK hardiness rating H5 indicates the cultivar is hardy in most of the country and will survive typical winter conditions when planted in an appropriate site. Delphinium 'Polar Sensation' (Highlander Series) suits perennial beds and mixed borders and is developed with cut flowers in mind. Position it towards the middle or rear of borders where its upright habit can carry blooms above lower plants, and harvest stems during the June–August flowering window for summer arrangements.

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.

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