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A picture of a Dahlia

Dahlia

Dahlia spp.

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Full Sun
Easy care
Moderate watering
Tender

H4-H1c

RHS hardiness

-10°C

Minimum temperature

Expected size

Height
Spread

1.8m

Max

50cm

20cm

Min

20cm

3 years to reach maturity

Flowering

    • spring
    • summer
    • autumn
    • winter

    This plant has a mild fragrance

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    A photo of Dahlia
    A photo of Dahlia
    A photo of Dahlia
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    A photo of Dahlia

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    Overview

    The genus Dahlia contains many famous and rewarding summer bulbs that produce dazzling displays from summer to autumn. It contains around 38 species which have large tuberous root systems which produce bushy, herbaceous, bamboo-like stems. Around 20,000 cultivars are predominantly derived from D. pinnata and D. coccinea. Most Dahlias are divided into groups based on the form of their flower heads, from dwarf varieties to tall bushes and even tree specimens.

    Common problems

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

    Harvesting

    Harvest flowers during mid-summer months.

    Propagation

    Tubers

    Cuttings

    In spring take soft-wood cuttings from the shoots appearing from stored tubers.

    Division

    Lifted clumps of Dahlia's can be divided in late winter, ensuring each section has an 'eye' (growing tip).

    Special Features

    Attracts useful insects

    It attracts beneficial pollinators such as butterflies, bees and moths.

    Attractive flowers

    Brings colour to the garden during autumn months. Flowers range from red, orange, yellow, violet, white, to pink.

    Pot plant

    Can be grown in large containers.

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