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Irish Florists > Flowers > Dahlia


Dahlia Description

The Dahlia is a very popular flowering plant with gardeners and florists alike. Many varieties of Dahlia can be grown from seed for flowering the same year as sowing.

The blooms come in a wide array of colours including, white, yellows, orange, pink, mauve, and various shades of red. Dahlias display well in a garden bed on their own or as part of a cottage garden mix including marigolds and tall poppies

These plants can be grown in beds, borders, tubs and window boxes.

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Cultivation of Dahlia Plants

Dahlia seeds should be sown in late winter under glass for flowerings in late spring / early summer. Maintain the temperature at 16 degrees Celsius.

Dahlia Flowers

Plants should be hardened off from the middle of spring once the danger of any frost has passed

Bedding dahlias will thrive in a medium to heavy soil in a sunny site. If the soil in the flower bed is poor the enrich it by adding well-rotted manure a few weeks prior to planting out.

Deadheading will prolong the flowering season and regular watering is a necessity.

Popular Varieties of Dahlia

The following lists some popular varieties of Dahlia.

Dwarf Amore Double and semi-double blooms, bushy
Bambino Mixed

Double blooms, miniature suitable for containers

Sunburst single blossoms, wide petals that overlap
Rigoletto Double and semi-double flowers, dwarf variety
Collerette Dandy

Single blossoms

Cactus-flowered Hybrids Double and semi-double blooms, tall - up to 1.2m
Diablo Semi-double blossoms, bronze leaves, compact

Dahlia Pests and Diseases

Dahlias can be susceptible to rust and / or mildew on leaves and stems. The blooms may also be affected by petal blight.

Height 30cm to 1.20m

Dahlia - Scientific Classification

Planting distance: 30 to 60cm Kingdom Plantae
Flowers from middle of summer until first frost Order Asterales
Medium to heavy soil Family Asteraceae
Sunny site Genus Dahlia
Half hardy annual    
Flowers Index Cornflower Hyacinth Pot Marigold
African Daisy Crocus Lily Primula
Ageratum Daffodil Lily of the Valley Snapdragon
Alstroemeria Dahlia Lobelia Snowdrop
Anemone Daisy Marigold Stock
Babys Breath Delphinium Pansy Sunflower
Begonia Forget-me-Not Pelargonium Sweet Alyssum
Bells of Ireland Freesia Petunia Sweet Pea
Busy Lizzie Gladiolus Phlox Tulip
Chrysanthemum Hollyhock Poppy Wallflower

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