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Delphinium Moerheimii - Larkspur

Delphinium x belladona Moerheimii
Belladonna Larkspur, Perennial Larkspur

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Less spectacular, but also easier to grow, this very bright variety offers long spikes adorned with single and light flowers, pure white with pale yellow spots. This flowering is truly elegant, in July-August. Appreciating cool and humus-rich soil, this perennial larkspur tolerates partial shade well. It is also more resistant to diseases and parasites. The Belladonna Group hybrids are excellent perennial flowers for borders, reliable and hardy.
Flower size
4 cm
Height at maturity
1.50 m
Spread at maturity
50 cm
Exposure
Sun, Partial shade
Hardiness
Hardy down to -34°C
Soil moisture
Moist soil
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Best planting time March, October
Recommended planting time February to April, September to November
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Flowering time June to July
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Description

Delphinium 'Moerheimii' is a perennial larkspur in the Belladonna Group that is less spectacular than the 'Pacific' hybrids, but it is easier to grow and has a more natural appearance. This very bright variety offers long, airy spikes in summer, adorned with single, light and pure white flowers, enhanced by small pale yellow spots. This larkspur thrives in cool and humus-rich soils tolerates partial shade well. It is also more resistant to diseases and pests. An excellent perennial for borders, faithful and charming like the flowers of the past. 

Delphinium 'Moerheimii' is a plant of the Ranunculaceae family belonging to a group of perennial varieties obtained by cross-breeding the Delphinium elatum and D. grandiflorum. 'Moerheimii' stands out for its good tolerance to partially shaded exposures. It reaches a height between 1m (3ft) and 1.30m (4ft), giving it an erect habit, but often requiring staking. Floral stems emerge from a clump of large palmate and finely divided leaves, usually in June-July. If the faded flower spikes are pruned, flowering will resume in September, depending on the climate. This variety produces unbranched spikes, 40cm (16in) long, adorned with 3 to 4cm (1 to 2in) diameter, single, graceful and light flowers. They are slightly translucent white, with a small yellow mark at the centre. The plant develops from a woody rootstock that sinks vertically into the soil. Its above-ground, deciduous vegetation emerges in spring and dries up in autumn. Young shoots must be protected from slugs, which are very fond of them. 

Delphiniums are herbaceous perennial plants that are always very noticeable in a garden. Belladonna hybrid Delphiniums allow us to appreciate these plants in a different way, with the joy of finding them faithfully where we expect them, for several years. Their characteristic silhouette always adds height, verticality and a lot of charm to perennial plant borders, with an added lightness. They are good companions for moss or gallica roses, with which they form charming and romantic scenes. You can also create another beautiful combination with daylilies and hybrid mulleins. Their flowers hold up well in bouquets.

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

Delphinium Moerheimii - Larkspur in pictures

Delphinium Moerheimii - Larkspur (Flowering) Flowering
Delphinium Moerheimii - Larkspur (Foliage) Foliage

Flowering

Flower colour white
Flowering time June to July
Inflorescence Spike
Flower size 4 cm
Good for cut flowers Cut flower blooms
Flowering description White with a yellow centre.

Foliage

Foliage persistence Deciduous
Foliage colour green
Foliage description Deciduous.

Plant habit

Height at maturity 1.50 m
Spread at maturity 50 cm
Growth rate normal

Safety measures

Potential risks Plant may be toxic if swallowed

Botanical data

Genus

Delphinium

Species

x belladona

Cultivar

Moerheimii

Family

Ranunculaceae

Other common names

Belladonna Larkspur, Perennial Larkspur

Origin

Cultivar or hybrid

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Planting and care

Without being very difficult, the cultivation of Delphiniums still requires some precautions: these plants detest heavy and wet soils, as well as dry and poor soils. The soil that suits them is a good black soil, rich in humus, non-compact, fresh, even in summer, but without excess in winter, and sheltered from strong winds. Under these conditions, they will live for many years. Also beware of slugs which can cause damage at the beginning of vegetation.

Planting period

Best planting time March, October
Recommended planting time February to April, September to November

Intended location

Suitable for Meadow
Type of use Border, Back of border
Hardiness Hardy down to -34°C (USDA zone 4) Show map
Ease of cultivation Amateur
Planting density 5 per m2
Exposure Sun, Partial shade
Soil pH Neutral
Soil type Silty-loamy (rich and light)
Soil moisture Moist soil, Deep, light, humus-bearing

Care

Pruning instructions To extend the flowering period, you can regularly remove the faded flowers.
Pruning Pruning recommended once a year
Pruning time June to July
Disease resistance Good
Overwinter Can be left in the ground

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