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Dahlia Duke Duweno

Dahlia Duke Duweno
Dahlia

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thierry A., 08/10/2017

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This plant carries a 6 months recovery warranty

More information

This Dahlia produces a profusion of 7cm (3in) flowers, resembling large pompoms, in a rich violet-purple colour with magenta highlights. Reaching a height of 80cm (32in), this well-branched variety is appreciated for bouquet arrangements and border decoration. It also adapts well to pot cultivation.  
Flower size
8 cm
Height at maturity
80 cm
Spread at maturity
50 cm
Exposure
Sun
Hardiness
Hardy down to -4°C
Soil moisture
Moist soil
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Best planting time March to April
Recommended planting time March to May
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Flowering time July to November
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Description

The 'Duke Duweno' Dahlia is a difficult-to-find variety, with inflorescences that resemble beautiful, regular, and perfectly rounded pompoms. It produces a profusion of flowers from July to October, with a beautiful violet-purple colour enriched with magenta highlights, stunning next to pink or 'black' flowers, for example. Not exceeding a height of 80cm (32in), with a bushy habit, the plant produces excellent cut flowers. It will also be appreciated in sunny borders and the heart of flower beds. It is also suitable for container cultivation.

  

Dahlias belong to the Asteraceae family and are originally from the high plateaus of Mexico. Currently, the approximately 25,000 horticultural varieties obtained by humans have invaded gardens worldwide, much to our delight.

The 'Duke Duweno' variety is classified either among decorative Dahlias or ball Dahlias, which is a horticultural category defined by the shape of the flower. In this group, the heads are larger than those of pompom Dahlias, produced abundantly, and the tubular ligules form a more or less spherical or flattened inflorescence that has a regularly alveolate structure, like a beehive. The flowers of 'Duke Duweno' have a diameter of about 7-8cm (3in). Their colour is quite rare, blending different shades of purple, burgundy, violet, with magenta highlights in the sun. The flowering period is from July to October. The habit is particularly bushy. The highly branched stems are hollow, and the leaves are opposite, pinnately lobed, meaning they are divided into 3 or 5 very toothed lobes. The leaves and stems are a bright green colour.


To promote continuous flowering, make sure to remove faded flowers, or better yet, regularly make large colorful bouquets by combining them with other varieties. 'Duke Duweno' pairs particularly well with very dark flowers or different shades of pink, English roses, and the mauve colours found in paniculate phlox. In flower beds, this Dahlia will create highly colourful spots in the company of Echinaceas and fox-tail Amaranthus, for example, which bloom at the same time, as well as daylilies and asters. This variety with its highly flowered stems allows for the decoration of bouquets until late in the season.

As a star plant in borders and herb gardens, Dahlias confidently accompany the most beautiful flowers but are also appreciated alongside vegetable plants. In Mexico, this tuber was initially cultivated as a root vegetable for consumption. However, its poor taste qualities relegated it to the status of an ornamental plant. Since then, the interest in their beautiful exuberance has never waned.

Dahlia Duke Duweno in pictures

Dahlia Duke Duweno (Flowering) Flowering
Dahlia Duke Duweno (Foliage) Foliage

Plant habit

Height at maturity 80 cm
Spread at maturity 50 cm
Growth rate fast

Flowering

Flower colour violet
Flowering time July to November
Inflorescence Flower head
Flower size 8 cm
Good for cut flowers Cut flower blooms

Foliage

Foliage persistence Deciduous
Foliage colour green

Botanical data

Genus

Dahlia

Cultivar

Duke Duweno

Family

Asteraceae

Other common names

Dahlia

Origin

Cultivar or hybrid

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Planting and care

The Dahlia 'Duke Duweno' is easy to grow in all regions. For abundant flowering, it is good to follow a few simple rules. Plant the tubers in a sunny location as soon as the last frost has passed. Rich, fresh, and well-drained soil is perfect. However, stagnant moisture would promote tuber rot. Feel free 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 to fill without air pockets. Your dahlia should be covered with about 6cm (2in) of soil. At the end of planting, water once abundantly and then regularly renew this watering during the first 6 weeks to aid in rooting. Dahlias are sensitive to cold, so they must be overwintered. In November, the first frost causes the foliage to turn black, which is the time to dig them up. Carefully remove 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 in a frost-free, dry, cool, and dark place, such as a garage or attic. In southern regions, close to the coast, where there are few days of frost per year, it is possible to leave them in place. In this case, simply cover the ground with a carpet of leaves or straw for protection.

Planting period

Best planting time March to April
Recommended planting time March to May

Intended location

Suitable for Meadow
Type of use Border, Vegetable garden
Hardiness Hardy down to -4°C (USDA zone 9b) Show map
Ease of cultivation Amateur
Planting density 5 per m2
Exposure Sun
Soil pH Any
Soil moisture Moist soil, Fertile, well-drained.

Care

Pruning instructions Eliminate the faded flowers regularly.
Pruning Pruning recommended once a year
Pruning time July to September
Soil moisture Moist soil
Disease resistance Very good
Overwinter Needs to be stored
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