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Dahlia Calgary Flames

Dahlia Calgary Flames

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The flowers of this Dahlia measure 12 cm, they are made up of twisted bright yellow petals with a white reverse and tip. They are borne by compact stems of 90 cm. This spreading bush blooms from July until the frosts, bringing a very vibrant touch to borders, growing well in pots, and its flowers are very long-lasting in bouquets.
Flower size
12 cm
Height at maturity
90 cm
Spread at maturity
60 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 Decorative Dahlia 'Calgary Flames' does not leave anyone indifferent with its twisted small yellow and white flowers. They resemble small kermesse windmills. It is a rather compact and well-branched variety that is perfect for large borders and container growing. Its radiant, abundant, and prolonged flowering allows for creating cheerful bouquets.

The Dahlias are tuberous plants belonging to the aster family. They originate from frost-sensitive botanical species native to the high plateaus of Mexico. There are thousands of horticultural varieties, and numerous novelties are created each year. Dahlias are classified based on the shape of their flowers. 'Calgary Flames', registered in the Netherlands in 2023, is classified in the Decorative Dahlias category, and in the subcategory of decorative dahlias with small flowers. In this horticultural group, the coloured ligules (or "petals") of the head are arranged regularly in a spiral, they can be curved towards the stem or even frilled, for example. In 'Calgary Flames', each head measures 12 cm in diameter and its ligules are tapered, more or less tubular, spiralled, and twisted, partly curved downwards. They are white, coloured vivid lemon yellow at the base, with a white reverse. The flowering period extends from July to October-November. The plant, forming an erect clump, will reach an average height of 90 cm, and 50 to 60 cm in width. The stems are hollow and branched, the leaves are divided into 3 or 5 leaflets, which form very denticulate lobes. The leaves and stems are of a fairly dark green colour. To encourage flower reblooming and extend the flowering period, make sure to remove faded flowers and make bouquets!

To complement the spirited Dahlia 'Calgary Flames', choose plants in pastel or silvery tones, such as 'Richard Gray' lavenders or 'Silver' Helichrysum petiolare, which will enhance its vibrant colours. Erigeron karvinskianus or gauras with their airy flowering will bring movement and delicate texture to balance the dahlia's sturdier structure. Add some grasses like 'Bronze Form' carex comans for a touch of lightness and dynamism.

Dahlias, emblematic of cottage gardens, are remarkable flowers that brighten up borders with their vibrant colours. Although perfect in flower beds, they can also add a decorative touch to the vegetable garden. In Mexico, these tuberous plants were originally cultivated for their edible roots, but their limited culinary interest quickly relegated them to ornamental plants. Since then, their generous beauty and spectacular flowering continue to charm generations of gardeners.

Plant habit

Height at maturity 90 cm
Spread at maturity 60 cm
Growth rate fast

Flowering

Flower colour two-tone
Flowering time July to November
Inflorescence Flower head
Flower size 12 cm
Good for cut flowers Cut flower blooms

Foliage

Foliage persistence Deciduous
Foliage colour dark green

Botanical data

Genus

Dahlia

Cultivar

Calgary Flames

Family

Asteraceae

Origin

Cultivar or hybrid

Product reference23337

Planting and care

The Dahlia 'Calgary Flames' is easy to grow in all regions. For a generous flowering, it is good to respect a few simple rules, plant the tubers in a sunny location as soon as the last frosts are over, 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 refill without air pockets. Your dahlia should be covered with about 6 cm of soil. At the end of planting, water once abundantly and then renew this watering regularly during the first 6 weeks to help with rooting.

Dahlias are sensitive to cold, they need to be overwintered. In November, the first frosts blacken the foliage, 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 10 cm. Spread your bulbs in a box on newspaper. Store them frost-free in a dry, cool, dark place, such as a frost-free garage or attic. In southern regions, close to the coast, experiencing few frost days per year, it is possible to leave them in place. In this case, simply cover the ground with a mat of leaves or straw for protection.

This Dahlia, with its hollow stems, is still sensitive to strong winds or heavy rains. To overcome this drawback, you can stake it, but let's agree, it's not very aesthetic. However, by pinching the stems early or removing 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 channel the flow of sap to a single flower that will become larger and sturdier.

Planting period

Best planting time March to April
Recommended planting time March to May
Planting depth 10 cm

Intended location

Suitable for Meadow
Type of use Border, Edge of border, Container, 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 Remove regularly the faded flowers 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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