Choose a country to see content specific to your location

A picture of a Garden Dahlias

Garden Dahlias

Dahlia spp.

Full Sun
Easy care
Moderate watering
Tender

9a-11b

USDA zone

-7°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

    More images of Garden Dahlias

    A photo of Garden Dahlias
    A photo of Garden Dahlias
    A photo of Garden Dahlias
    FIDALGOBLACKY
    A photo of Garden Dahlias

    Garden Dahlias 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 with Garden Dahlias

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

    How to harvest Garden Dahlias

    Harvest flowers during mid-summer months.

    How to propagate Garden Dahlias

    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).

    Seed

    Special features of Garden Dahlias

    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.

    Other uses of Garden Dahlias

    Grown as bedding plants or for their flower heads, which are good for cutting or exhibition. Suitable for coastal conditions.

    Summer Flowering Bulbs

    Plant out these flowering bulbs in spring to enjoy their summer performance.

    Explore all