Delphinium Black Knight Group (delphinium Black Knight Group) — Columnar upright

Overview

Delphinium Black Knight Group is a columnar upright herbaceous perennial in the genus Delphinium, part of the Ranunculaceae family, with deciduous foliage. It typically grows around 1.5-2.5 metres tall and 0.5-1 metres wide, reaching full size in around 2-5 years. Delphinium Black Knight Group grows best in full sun, and tolerates most soils and any pH. Its UK hardiness is rated H5. Suggested uses include beds, borders and cut flowers.

About

Delphinium Black Knight Group is a cultivar of the Delphinium genus, which comprises about 300 species of annual and perennial flowering plants in the Ranunculaceae family. This herbaceous perennial features a columnar upright habit and deciduous foliage. It typically grows to a height of 1.5 to 2.5 metres with a spread of 0.5 to 1 metre, reaching full height within 2 to 5 years. Best grown in full sun and sheltered positions, it thrives in moist but well-drained or well-drained soils, including chalk, loam, and sand, across a range of soil pH levels. Its season of interest is summer.

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: Chalk, Loam, Sand
Soil pH: Acid, Alkaline, Neutral
Soil moisture: Moist but well-drained, Well-drained
Aspect: South-facing, West-facing, East-facing
Exposure: Sheltered
UK hardiness: H5

Plant details

Delphinium Black Knight Group size, habit and characteristics

Plant type: Herbaceous Perennial
Habit: Columnar upright
Foliage: Deciduous
Height: 1.5-2.5 metres
Spread: 0.5-1 metres
Time to full height: 2-5 years
Suggested uses: Beds, borders, cut flowers

Care notes

Pruning and caring for Delphinium Black Knight Group

Propagation: Seeds, division
Pest resistance: Slugs
Disease resistance: Powdery mildew

Frequently asked questions

Where is the best place to plant Delphinium Black Knight Group?

Delphinium Black Knight Group prefers full sun. It suits sheltered positions.

What soil does Delphinium Black Knight Group need?

Delphinium Black Knight Group is adaptable and grows happily in most soil types, including chalk, loam and sand. It is happy in soil of any pH. Aim for soil that stays moist but well-drained to well-drained.