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Aconitum carmichaelii Royal Flush

Aconitum carmichaelii Royal Flush
Carmichael's Monkshood

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An impressive variety that offers large helmet-shaped flowers in a dark violet-blue colour, from August to October. Its strong red flowering stalks emerge from a clump of glossy leaves, which are deeply cut into strips and decorative outside of the flowering period. They are tinged with bronze-red in spring, then turn green before summer. This perfectly hardy perennial thrives in non-scorching sun or partial shade, in any moist and fertile soil. All parts of the plant are highly toxic.
Flower size
3 cm
Height at maturity
1 m
Spread at maturity
40 cm
Exposure
Sun, Partial shade
Hardiness
Hardy down to -23°C
Soil moisture
Moist soil, Damp soil
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Best planting time March, October
Recommended planting time February to April, October to December
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Flowering time August to October
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Description

Aconitum carmichaelii 'Royal Flush' is a truly royal Aconite, an impressive plant with its stature, late, massive and prolonged flowering and its beautiful palmate foliage, beautifully coloured in bronze red in spring. Its tall, red-tinged flower stems are adorned with large flowers of deep blue-violet, reminiscent of an ancient helmet. This flowering rises above a clump of shiny, finely cut, decorative leaves outside of the flowering period. Preferred in moist to wet and rich soils, this perennial is a beautiful splendor for gently sunny or partially shaded borders. 

Aconitum 'Royal Flush' is a horticultural variety from Darwin Perennials, derived from the Carmichael Aconite. Like all Aconites, it belongs to the Ranunculaceae family. The flowering plant measures between 80cm (32in) and 1.20m (4ft) in height, with a width of 40cm (16in). This deciduous perennial, very cold-resistant, emerges from the ground in spring and disappears underground in winter. The flowering of this variety, late, takes place between August and October. Clumps of leaves emerge from numerous branched, vertical, thick, reddish stems. Its elongated, helmet-shaped flowers are composed of petals of a deep violet-blue, revealing a black throat. This plant develops from a fleshy tuberous stump, from which an erect clump of palmate, deeply lobed, leathery leaves emerges in spring. They are deeply veined, their colour ranging from dark bronze red to slightly shiny dark green. All parts of this perennial are highly toxic.

Aconites suffer from a bad reputation in the garden, due to their legendary toxicity. And it is truly regrettable, because these plants, accustomed to cottage gardens, have their place in all borders with moist soil. They are robust, very hardy, and their foliage is among the most beautiful among perennial plants. Not to mention their vibrant flowering, ranging from almost white to gentian blue and soft yellow. They are perfect companions for delphiniums, asters, Ligularias, and Rodgersias, for example. They can be planted among bushes, with Japanese anemones for instance. They are good perennials, just like foxgloves, for light and fresh woodlands. Finally, their flowers are beautiful in bouquets.

 

 

Aconitum carmichaelii Royal Flush in pictures

Aconitum carmichaelii Royal Flush (Flowering) Flowering
Aconitum carmichaelii Royal Flush (Foliage) Foliage

Flowering

Flower colour violet
Flowering time August to October
Inflorescence Cluster
Flower size 3 cm
Good for cut flowers Cut flower blooms
Flowering description Spires of deep blue.

Foliage

Foliage persistence Deciduous
Foliage colour dark green
Foliage description Glossy, deciduous.

Plant habit

Height at maturity 1 m
Spread at maturity 40 cm
Growth rate normal

Safety measures

Potential risks Plant may be toxic if swallowed

Botanical data

Genus

Aconitum

Species

carmichaelii

Cultivar

Royal Flush

Family

Ranunculaceae

Other common names

Carmichael's Monkshood

Origin

Cultivar or hybrid

Product reference18549

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Planting and care

Carmichael's Aconites thrive in non-burning sun or partial shade, in a sheltered location away from strong winds. They appreciate a deep, moist soil that is rich in humus or compost, whether it is slightly acidic, neutral or alkaline. In full sun, the soil should be consistently slightly moist and never completely dry out. For this reason, it is recommended to use mulch in summer to maintain some freshness. The soil that accommodates Aconites will be enriched with compost, leaf mould and peat, which will give it a slight acidity. However, this variety is rather accommodating and will thrive in a good garden soil that remains cool in summer.

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Planting period

Best planting time March, October
Recommended planting time February to April, October to December

Intended location

Suitable for Meadow, Woodland edge
Type of use Border
Hardiness Hardy down to -23°C (USDA zone 6a) Show map
Ease of cultivation Amateur
Planting density 5 per m2
Exposure Sun, Partial shade
Soil pH Neutral
Soil type Clayey (heavy), Clayey-chalky (heavy and alkaline), Silty-loamy (rich and light)
Soil moisture Moist soil, Damp soil, Fertile, deep, flexible.

Care

Pruning instructions Prune the dry stems in late winter.
Pruning Pruning recommended once a year
Pruning time March
Disease resistance Very good
Overwinter Can be left in the ground
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