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Delphinium Galahad - Larkspur

Delphinium Pacific-hybrid Galahad
Larkspur, Perennial Larkspur

4,4/5
34 reviews
3 reviews
5 reviews
2 reviews
2 reviews

Beautiful young plant originally of good pruning, but mishandled by the delivery person who holds the parcels vertically contrary to the instructions on the box. The soil was overturned, the leaves are broken. Replanted immediately, but it is sulking unlike the other blue one which is doing very well.

Marjorie, 08/04/2023

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This plant carries a 12 months recovery warranty

More information

This Delphinium from the 'Pacific' series is a recent creation that stands out for the size of its flower heads, which can reach 1 metre (3 feet). Each clump of leaves produces several flower stalks that bear pure white flowers with black stamens. Perennial larkspurs thrive in sunny locations with rich, deep, well-draining soil. The 'Pacific' variety requires staking.
Flower size
5 cm
Height at maturity
1.80 m
Spread at maturity
40 cm
Exposure
Sun
Hardiness
Hardy down to -29°C
Soil moisture
Moist soil
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Best planting time March to April
Recommended planting time March to May, September to November
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Flowering time June to July, September
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Description

This 'Galahad' perennial Delphinium, from the 'Pacific' series, is a recent creation that stands out for the size of its flower heads, which can reach 1 metre (3 feet). Each clump of leaves produces numerous flowering stems during the summer, hosting beautiful pure white flowers with black stamens. The giant flowering stems of the 'Pacific' series are susceptible to wind damage and require staking. Plant them at the back of a border, in a sunny location, and deep, moist, well-drained soil.

 

The 'Galahad' Delphinium is one of the many hybrids derived from the wild species Delphinium elatum, which gave rise to the famous 'Pacific Giant' varieties, created in 1979 by Frank Reinelt in the United States. It is a large, short-lived herbaceous perennial plant with rapid growth. It forms a clump of deeply lobed palmate foliage in a soft green colour, from which 1 metre (3 feet) tall flowering stems emerge in summer on numerous stems ranging from 1.5 to 1.80 metres (5 to 6 feet) in height. The main flowering period takes place in June and continues until September if the stems are cut back as they finish blooming. It is beautiful to pollinating insects. The flowers are single, cup-shaped, clustered on tall upright spikes. They also display white petals surrounding a large collar, known as the "bee" or "fly" in pure white. Only the black stamens add a touch of spice to the immaculate flowers. The plant develops from a woody rhizome that vertically penetrates the soil.

 

The characteristic silhouette of Delphinium always adds grandeur, verticality, and a lot of style to perennial plant borders. They make great companions for moss or Gallica roses, creating charming and romantic compositions. Another beautiful combination can be made with daylilies, paniculate gypsophila, or even beautiful grasses like Miscanthus. This variety is also suitable for container gardening. It should be carefully staked or supported by tall perennials or flowering shrubs. Its flowers hold up well and are particularly appreciated in bouquets.

 

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

Delphinium Galahad - Larkspur in pictures

Delphinium Galahad - Larkspur (Flowering) Flowering
Delphinium Galahad - Larkspur (Foliage) Foliage

Flowering

Flower colour white
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 green

Plant habit

Height at maturity 1.80 m
Spread at maturity 40 cm
Growth rate fast

Safety measures

Potential risks Plant may be toxic if swallowed

Botanical data

Genus

Delphinium

Species

Pacific-hybrid

Cultivar

Galahad

Family

Ranunculaceae

Other common names

Larkspur, Perennial Larkspur

Origin

Cultivar or hybrid

Planting and care

To grow delphiniums, plant them in the spring after the last frost in a sunny location, using moist, rich soil that is well-drained. Leave at least two or three shoots for young plants and five to seven for well-established delphiniums. During growth, water once or twice a week and apply liquid fertiliser every two or three weeks. Remove faded flowers by cutting the spikes at the level of the small lateral flowering shoots to maintain the plant's appearance. In autumn, cut back the entire plant to ground level. To add a touch of height to your garden, consider using delphiniums. The tallest ones can provide volume and light against a dark background, while intermediate-sized ones can dress up tall flower beds. Regular watering is essential to maintain vegetation. Be on the lookout for slugs.

Planting period

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

Intended location

Suitable for Meadow
Type of use Edge of border, Back of border
Hardiness Hardy down to -29°C (USDA zone 5) Show map
Ease of cultivation Amateur
Planting density 4 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
4,4/5

Summer flowering perennials

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