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Genus of about 30 species (and some 20,000 cultivars predominantly derived from D. pinnata and D. coccinea) of bushy, usually tuberous-rooted perennials from mountainous areas of Mexico and Central America.
Late-flowering so provide colour when other flowers are past their best.
Single varieties attract insects.
TuberousTuberous perennial. Clunp-forming, compact variety. Flowers 10-15cm (4-6in) across.
Half hardy - unheated greenhouse / mild winterHardy in coastal and relatively mild parts of the UK except in severe winters and a risk from sudden (early) frosts. May be hardy elsewhere with wall shelter or good micro-climate. Likely to be damaged or killed in cold winters. Plant can withstand temperatures down to -5°C (23°F)
Additional FeaturesGood to knowWildlife plant - nectar and pollen for insects. Small bedding type. Ideal for the front of a border.Pests & DiseasesSlugs, earwigs, caterpillars, powdery mildew, mosaic virus.Place of originGarden origin
Flower ShapeSemi-doubleTwo rows of petals with conspicuous stamens
HardinessFrost hardy (down to -5)
Soil ConditionsFertile well drained soilHumus-rich.
Buy Varieties of DAHLIA
Decorative form. Crimson red
Peony form. Purple foliage, semi-double scarlet flowers
Dwarf form. Large bright yellow ribbed, sunflower-like blooms with prominent orange centres. Black lacquered foliage
Dwarf form. Bronze foliage and single, orange-yellow flowers with a red centre
Dwarf form. Shocking magenta single pink with bronzed leaves