Dahlia Classic - A Timeless Garden Favourite

Classic Dahlia. Perfect in a bouquet, as a gift or when you want to impress without breaking a sweat.

Classic Dahlia

Classic Dahlia is one of the garden's most beloved flowers, enchanting with its rich colours and varied forms. This magnificent bloom has been a favourite among gardening enthusiasts for generations and continues to be a popular choice for both beginners and experienced growers.

Origin and Characteristics

The Dahlia originally stems from the highlands of Mexico and Guatemala, where it grew wild in mountainous regions. The flower was introduced to Europe in the 18th century and has since developed into countless varieties and cultivars. The classic Dahlia is characterised by its full, symmetrical blooms, which can vary in size from small pompoms to impressive giant flowers.

Colours and Forms that Enchant

One of the Dahlia's greatest assets is its incredible diversity in colours and forms. From deep reds and yellows to pastel pinks and white tones, there is a Dahlia for every taste and garden style. Classic varieties often offer traditional colour combinations that have stood the test of time and never go out of fashion.

Planting and Placement

Dahlias thrive best in a sunny location with well-drained soil. They are heat-loving plants that cannot tolerate frost, which means the tubers must be planted after the risk of frost has passed. Thoughtful placement in the garden can create spectacular effects, especially when Dahlias are combined with other autumn-flowering plants.

Care During the Growing Season

During the active growing season, Dahlias require regular attention to perform their best. Regular watering is important, especially during dry spells, but it is equally important to avoid overwatering, which can lead to root problems. Tall varieties may need support to prevent them from snapping in strong winds.

Flowering and Deadheading

Dahlias flower generously from midsummer until the first frost if cared for properly. Regular deadheading—the removal of spent flowers—encourages the plant to produce new buds and significantly extends the flowering period.

Overwintering and Storage

Since Dahlias are not hardy in our climate, the tubers must be lifted after the first frost and stored frost-free over winter. Proper handling of the tubers is crucial to ensure they survive the winter and can be planted again next season.

Garden Value

Classic Dahlias not only add colour and structure to the garden but also make excellent cut flowers. Their long vase life makes them a popular choice for floral arrangements and bouquets.

Quick facts – Dahlia – Classic

Colour
yellow
Latin name
Dahlia
Type
cut flower
Flowering
july-october
Light
full sun
Water
high
Height
40-150 cm
Vase life
5-8 days
Scent
none
Toxic to pets
yes
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FAQ about Dahlia – Classic

What kind of soil suits dahlias best?
Dahlias grow best in well-drained, fertile soil with a pH of 6.0-7.0. The soil must drain freely, as standing water rots the tubers. Dig in compost before planting, and plant out only once the risk of frost has passed.
How often should dahlias be watered?
Water deeply once or twice a week rather than little and often, and more in hot, dry weather. Water in the morning at the base of the plant to reduce the risk of fungal disease.
How should dahlias be pruned for the best flowering?
Deadhead regularly to encourage new flowers. Pinch out the growing tip when the plant is 20-30 cm tall for a bushier habit. For larger blooms, remove the side buds and let the main bud develop.
Which pests and diseases affect dahlias most often?
Slugs, aphids and earwigs are common pests, and slugs are especially fond of the young shoots. Powdery mildew and grey mould can appear in damp weather with poor air circulation. Space the plants well, keep the leaves dry and check them regularly.
How do I store dahlia tubers over winter?
Dahlias are not frost-hardy. Lift the tubers once the first frost has blackened the foliage, cut the stems back to 10-15 cm and leave them to dry for a few days. Store them in dry compost, sand or newspaper in a cool, frost-free place at about 5-10°C, and check now and then for rot. In mild, free-draining gardens some gardeners leave them in the ground under a thick mulch.

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