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Delphinium Völkerfrieden - Larkspur

Delphinium Pacific-hybrid Black Knight
Larkspur, Perennial Larkspur

3,9/5
20 reviews
1 reviews
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3 reviews

My only regret is not having photographed them upon arrival! Terribly disappointed with the quality!

plants minuscules N'ont bien entendu pas repris, 14/05/2024

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This plant carries a 12 months recovery warranty

More information

This larkspur is a large, perennial variety that produces magnificent 1 metre long, deep purplish-blue flower heads in summer, with a large black ruff at the centre. Magnificent and spectacular at the back of a bed. These plants thrive in sunny, rich, deep, penetrable soil.  
Flower size
5 cm
Height at maturity
2 m
Spread at maturity
50 cm
Exposure
Sun
Hardiness
Hardy down to -29°C
Soil moisture
Moist soil
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Best planting time March, October
Recommended planting time March to May, September to November
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Flowering time June to July, September
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Description

Delphinium x cultorum Pacific 'Black Knight', also known as larkspur, is a tall and magnificent perennial plant that produces stunning flower heads in the summer. The flowers, which are deep bluish-violet in colour, are often over 1 metre (3 feet) tall and have a dark black collar at the centre. They are perfect for adding a touch of grandeur to the back of a border, in pots or planters near your house or in bouquets. These larkspurs thrive in sunny locations that have rich, deep and permeable soil.

 

The 'Pacific Black Knight' Delphinium is a hybrid (x cultorum) obtained by cross-breeding D. elatum, which also gave rise to the famous "Pacific Giant" series. This large herbaceous perennial plant has a short life span but rapid growth. It forms a cluster of deeply cut palmate foliage, tender green in colour, from which floral spikes emerge in summer. The spikes can reach a height of 1 to 1.20 metres (3 to 4 feet) on numerous stems that are 1.8 to 2 metres (6 to 7 feet) tall. The main flowering occurs in June and continues in September if the stems are cut back as they fade. It is highly attractive to pollinating insects. The flowers are single, cup-shaped and arranged on large, upright and sturdy spikes. They have deep bluish-violet petals that surround a black collar, called a 'fly' or 'bee'. The plant grows from a woody rootstock that sinks vertically into the soil.

 

Delphiniums have a characteristic silhouette that adds dimension, verticality and charm to perennial plant beds. They also make great companions for moss or gallica roses, creating charming and romantic compositions. Another beautiful combination can be created with soft orange daylilies and the baby's breath 'Rosenschleier'. This variety is also perfect for creating flower pots and its flowers hold up well in bouquets.

 

Note: From March to September, the stems of our delphiniums are pruned short to allow better branching from the base and achieve optimal rooting. This pruning also prevents the stems from breaking during transportation.

Delphinium Völkerfrieden - Larkspur in pictures

Delphinium Völkerfrieden - Larkspur (Flowering) Flowering
Delphinium Völkerfrieden - Larkspur (Foliage) Foliage

Flowering

Flower colour blue
Flowering time June to July, September
Inflorescence Spike
Flower size 5 cm
Good for cut flowers Cut flower blooms

Foliage

Foliage persistence Deciduous
Foliage colour medium green

Plant habit

Height at maturity 2 m
Spread at maturity 50 cm
Growth rate fast

Safety measures

Potential risks Plant may be toxic if swallowed

Botanical data

Genus

Delphinium

Species

Pacific-hybrid

Cultivar

Black Knight

Family

Ranunculaceae

Other common names

Larkspur, Perennial Larkspur

Origin

Cultivar or hybrid

Product reference72492

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Planting and care

To grow healthy delphiniums, plant them in spring after the last frost in a sunny location with soil that is deep, moist, and well-drained. Make sure the soil is not too rich in limestone. Young plants should have at least two or three shoots, while the well-established ones should have five to seven. During the growth period, water the plants once or twice a week and use liquid fertiliser every two or three weeks. To encourage new growth, remove the faded flowers by cutting the spikes at the level of the small side flower shoots. In the fall, cut the entire plant back to ground level. 

 

If you want to add height to your garden, choose these giant plants. They will give structure and balance to the volumes. The taller ones can be planted alone to provide volume and lightness against a dark backdrop of hedges or conifers. The ones of intermediate size will dress up tall flowerbeds, such as those with giant dahlias. Water the plants regularly to keep them healthy, and watch out for slugs.

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Planting period

Best planting time March, October
Recommended planting time March to May, September to November

Intended location

Suitable for Shaded rockery, Woodland edge, Undergrowth
Type of use Edge of border
Hardiness Hardy down to -29°C (USDA zone 5) Show map
Ease of cultivation Amateur
Planting density 5 per m2
Exposure Sun
Soil pH Neutral
Soil type Silty-loamy (rich and light)
Soil moisture Moist soil, rich, light and deep

Care

Pruning instructions Tie up the stems in spring. Remove the flower heads quickly after flowering to encourage a second autumn flowering.
Pruning Pruning recommended once a year
Pruning time June to August
Disease resistance Good
Overwinter Can be left in the ground
3,9/5

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