Delphinium decorum — Clump-forming, upright

Overview

Delphinium decorum is a clump-forming, upright herbaceous perennial in the genus Delphinium, part of the Ranunculaceae family, with divided green leaves foliage. Delphinium decorum 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 decorum is a herbaceous perennial belonging to the Ranunculaceae family. It forms upright clumps with divided green leaves and produces prominent, bowl-shaped flowers arranged in spikes. This cultivar thrives in fertile, moist but well-drained loam soil with a neutral pH, ideally in full sun and sheltered from wind. Suitable for beds, borders, and cut flowers, it is hardy to UK zone H5 and is best propagated by basal cuttings in early spring. Flowering interest occurs in spring and summer, with plants benefiting from staking and mulching in spring.

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

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 decorum 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 decorum

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