Dahlia

Dahlia spp.

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The genus Dahlia contains many famous, rewarding summer bulbs that produce dazzling displays from summer-autumn. This genus contains around 42 species which have large tuberous root systems and produce bushy, herbaceous, bamboo-like stems. Many many more cultivars have been developed for garden use. There are 11 different sizes, from dwarf varieties to tall bushes and even tree specimens. It is also available in a variety of different colours, almost all but blue.
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Planning

Difficulty

Easy

Flowering time

Summer, Autumn

Harvesting

Harvest flowers during mid-summer months.

Propagation

Division

Division of large clumps of bulbs and offsets in the dormant period (winter). Place offsets 20-30 cm apart and at a depth of 8 cm.

Special features

Attracts useful insects
Attractive flowers
Pot plant

Special features

Origin

Central America, Mexico to Columbia.

Natural climate

Temperate to warm

Environment

Light

Full Sun

Soil moisture

Moist

Soil type

Loam, Sand, Compost, Chalk

Soil PH preference

Acid, Neutral

Frost hardiness

Tender

Personality

Family

Asteraceae

Flower colour

Red, orange, yellow, violet, white, pink., Multi coloured

Scent

Mild

Problems

Dahlia have a tendency to be affected by fungal diseases such as powdery mildew or grey mould if planted in poorly draining soil.
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Knowledge and advice

Search our ever-growing knowledge base to find plants and information. Find out about pests and diseases you should be keeping an eye out for. Watch How to videos or follow step by step guides for tasks in the garden. Free download for your phone or tablet.
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