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Dahlia Siemen Doorenbos

Dahlia Siemen Doorenbos
Dahlia

4,4/5
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Luce L., 18/06/2019

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A very pretty dahlia with anemone-like flowers, not very tall, whose 10 cm (4in) flowers are adorned with a tight and crumpled heart of white-cream, sometimes touched with pink-purple. This old variety still seduces with the spontaneity of its flowering, which extends from summer until the first frosts. Invite it into your flowerbeds and make very pretty bouquets with its cut flowers! 
Flower size
10 cm
Height at maturity
60 cm
Spread at maturity
40 cm
Exposure
Sun
Hardiness
Hardy down to -4°C
Soil moisture
Moist soil
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Best planting time March to May
Recommended planting time March to June
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Flowering time July to October
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Description

The Dahlia 'Siemen Doorenbos' is a variety of anemone-flowered dahlia whose flower is reminiscent of the charm and refinement of Japanese anemones, with which it could form beautiful associations. Not very tall but generous, the plant does not require staking and produces an abundance of precious flowers in a slightly mauve pink adorned with a tight and crumpled heart of white-cream colour, sometimes touched with violet and yellow. This old variety, now difficult to find in horticultural trade, always seduces with the spontaneity of its flowering, which extends from summer to the first frost. Perfect in a romantic garden!

Dahlias are herbaceous plants with tubers from the large family of asteraceae. They are originally from the high plateaus of Mexico. Currently, the roughly 25,000 horticultural varieties obtained by humans have invaded gardens worldwide. Dahlias are classified according to the shape of their flower. Introduced in 1943, 'Siemen Doorenbos' is classified in the category of decorative Dahlias with anemone-like flowers. In this group, the coloured ligules of the head are arranged in pompoms and surrounded by a collar of wider petals. In this Siemen Doorenbos variety, the heads are 10 cm (4in) in diameter and the outermost ligules are tubular, arranged in a simple collar of lavender-pink colour. Those in the centre are shorter, slightly fringed, white-cream tinged with yellow at the base. They turn purple-violet at the tip and are tightly packed together like a small cushion. The flowering takes place from the end of June to October. The plant will reach about 60 cm (24in) in height, with a bushy and dense habit. The very branched stems are hollow and the leaves are opposite and divided into denticulate leaflets. The leaves and stems are of a medium green colour.

To promote new blooms and extend the flowering period, make sure to remove faded flowers. Even better, regularly create attractive, colourful bouquets by combining various varieties. Emphasise the romantic and precious character of this 'Siemen Doorenbos' variety by associating it with asters, Japanese anemones, fine grasses, Calamagrostis, Eragrostis, Stipa pennata, or Molinia. The flowering of cannas and Echinaceas is perfect when accompanied by Dahlias, as they occur simultaneously, as well as the flowering of cosmos or shrubby salvias.

As the star of cottage gardens, Dahlias are undoubtedly beautiful flowers. They are perfect in flowerbeds but can also enhance the vegetable garden. In Mexico, this tuberous plant was first cultivated as a root vegetable for consumption. Its poor taste relegated it to the rank of ornamental plant. Since then, the interest in their beautiful exuberance has never waned.

Dahlia Siemen Doorenbos in pictures

Dahlia Siemen Doorenbos (Flowering) Flowering

Plant habit

Height at maturity 60 cm
Spread at maturity 40 cm
Growth rate fast

Flowering

Flower colour pink
Flowering time July to October
Inflorescence Flower head
Flower size 10 cm
Good for cut flowers Cut flower blooms

Foliage

Foliage persistence Deciduous
Foliage colour medium green

Botanical data

Genus

Dahlia

Cultivar

Siemen Doorenbos

Family

Asteraceae

Other common names

Dahlia

Origin

Cultivar or hybrid

Product reference8506111

Other Dahlias

3
From €6.90 2L/3L pot

Planting and care

The 'Siemen Doorenbos' Anemone Dahlia 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 soils are 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 well to fill the hole without air pockets. Your dahlia should be covered with about 6 cm (2in) of soil. At the end of planting, water abundantly once and then regularly for the first 6 weeks to help with rooting.

Dahlias are sensitive to cold, they need to be overwintered under shelter. In November, the first frosts blacken the foliage, so 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 down to 10 cm (4in). Spread your bulbs in a crate on newspaper. Store them protected from frost in a dry, cool, and dark place, such as a frost-free garage or an attic. In the 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 variety, with its sturdy stems, generally does not require staking.

Planting period

Best planting time March to May
Recommended planting time March to June

Intended location

Suitable for Meadow
Type of use Border
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 Remove faded flowers regularly to promote flowering.
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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