Dahlia Samourai
Dahlia Samourai
Dahlia Samourai
Dahlia
Does not match the descriptive photo.
Régis, 27/08/2025
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Description
The 'Samurai' semi-cactus Dahlia brings something very new to this category of dahlias, both in structure and in the colour of its inflorescences: large bristly pompoms, composed of delicate cyclamen pink petals and shorter, creamy white petals, all blending into a softer pink centre. This variety will make a big impact in sunny borders and its flowers will allow for bold bouquets.
Dahlias are tuberous plants from the large family of asters, originally native to the high plateaus of Mexico. At present, the thousands of horticultural varieties have invaded, to our great pleasure, gardens all over the world. These are not very hardy perennials, with fleshy tubers. The 'Samurai', registered in 1990, reaches a height of 1.10m (4ft), depending on the growing conditions, with a spread of 60cm (24in). It is classified among the cactus Dahlias, more specifically the semi-cactus dahlias; this is a horticultural category defined by the shape of the flower. In this group, the coloured ligules of the head curl completely, giving them a characteristic pointed appearance. This variety's flowering begins in July and ends in October-November. The heads measure 18 to 20cm (7 to 8in) in diameter. The habit is bushy and erect, and the highly branched stems are hollow. Its leaves are opposite, pinnately compound, meaning they are divided into 3 or 5 toothed lobes. The leaves and stems are a medium green, quite vivid.
To extend the flowering period and encourage repeat flowering, take care to remove faded flowers. Even better, regularly cut them to compose alluring colourful bouquets by combining several varieties. 'Samurai' pairs particularly well with white, pink, purple, or crimson blooms, especially those of roses. In a vase, pair it with chrysanthemums and tall asters, for example. In a border, it will perfectly complement white or pink Echinaceas and Cosmos, for example.
As a star plant for borders and herb gardens, Dahlias confidently accompany the most beautiful flowers, but are also appreciated alongside vegetable plants. In Mexico, this tuberous plant was first cultivated as a root vegetable for consumption. But its poor taste qualities assigned it the rank of an ornamental plant.
Dahlia Samourai in pictures
Plant habit
Flowering
Foliage
Botanical data
Dahlia
Samourai
Asteraceae
Dahlia
Cultivar or hybrid
Planting and care
The cactus Dahlia 'Samouraï' is easy to grow in all regions. For abundant flowering, it is good to follow a few simple rules, plant the tubers in full sun as soon as the last frosts have passed, rich, fresh, and well-drained soils are perfect. However, stagnant moisture would promote the rotting of the tubers. Do not hesitate to amend the soil with compost and sand if necessary. Work the soil deeply and enrich it, for example, with crushed horn or dehydrated blood. Place your tuber and crumble the soil well to fill without air pockets. Your dahlia should be covered with about 6cm (2in) of soil. At the end of planting, water abundantly once and then regularly renew this watering during the first 6 weeks to help with rooting.
Dahlias are sensitive to cold, they need to be overwintered. In November, the first frosts cause the foliage to blacken, it is time to dig them up. Carefully unearth the tubers. Remove as much soil as possible. Let the foliage dry so that the tubers can replenish their reserves. Then cut the stems to 10cm (4in). Spread your bulbs in a box on newspaper. Store them protected from frost in a dry, cool, and dark place, such as a frost-free garage or an attic, for example. In southern regions, close to the coast, where there are few frosty days per year, it is possible to leave them in place. In this case, simply cover the ground with a layer of leaves or straw for protection.
This tall Dahlia, with its hollow stems, does not withstand wind or heavy rain well. To overcome this disadvantage, you can stake it, but let's agree, it is not very aesthetic. On the other hand, by pinching the stems early or removing the axial flower buds, you will spread out the habit of the plant, which will offer more resistance to bad weather. At the same time, you direct the flow of sap to a single flower, which will become larger and stronger.
Planting period
Intended location
Care
Planting & care advice
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Hardiness is the lowest winter temperature a plant can endure without suffering serious damage or even dying. However, hardiness is affected by location (a sheltered area, such as a patio), protection (winter cover) and soil type (hardiness is improved by well-drained soil).
The flowering period indicated on our website applies to countries and regions located in USDA zone 8 (France, the United Kingdom, Ireland, the Netherlands, etc.)
It will vary according to where you live:- In zones 9 to 10 (Italy, Spain, Greece, etc.), flowering will occur about 2 to 4 weeks earlier.
- In zones 6 to 7 (Germany, Poland, Slovenia, and lower mountainous regions), flowering will be delayed by 2 to 3 weeks.
- In zone 5 (Central Europe, Scandinavia), blooming will be delayed by 3 to 5 weeks.
In temperate climates, pruning of spring-flowering shrubs (forsythia, spireas, etc.) should be done just after flowering.
Pruning of summer-flowering shrubs (Indian Lilac, Perovskia, etc.) can be done in winter or spring.
In cold regions as well as with frost-sensitive plants, avoid pruning too early when severe frosts may still occur.
The planting period indicated on our website applies to countries and regions located in USDA zone 8 (France, United Kingdom, Ireland, Netherlands).
It will vary according to where you live:
- In Mediterranean zones (Marseille, Madrid, Milan, etc.), autumn and winter are the best planting periods.
- In continental zones (Strasbourg, Munich, Vienna, etc.), delay planting by 2 to 3 weeks in spring and bring it forward by 2 to 4 weeks in autumn.
- In mountainous regions (the Alps, Pyrenees, Carpathians, etc.), it is best to plant in late spring (May-June) or late summer (August-September).
The harvesting period indicated on our website applies to countries and regions in USDA zone 8 (France, England, Ireland, the Netherlands).
In colder areas (Scandinavia, Poland, Austria...) fruit and vegetable harvests are likely to be delayed by 3-4 weeks.
In warmer areas (Italy, Spain, Greece, etc.), harvesting will probably take place earlier, depending on weather conditions.
The sowing periods indicated on our website apply to countries and regions within USDA Zone 8 (France, UK, Ireland, Netherlands).
In colder areas (Scandinavia, Poland, Austria...), delay any outdoor sowing by 3-4 weeks, or sow under glass.
In warmer climes (Italy, Spain, Greece, etc.), bring outdoor sowing forward by a few weeks.
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