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The first plant was called Dahlia pinnata after its pinnate foliage; the second, Dahlia rosea for its rose-purple color. In 1796, from the parts sent by Cervantes, Cavanilles flowered a third plant, which he named Dahlia coccinea for its scarlet color. In 1798, Cavanilles sent D. pinnata seeds to Parma, Italy.
There are 42 accepted species of flowering plants in the genus Dahlia, according to The Plant List. [1] The sectional classification of Dahlia sensu Sørensen (1969) [ 2 ] as updated by Saar et al. (2003) [ 3 ] and Hansen (2004) [ 4 ] and (2008) [ 5 ] is as follows (excluding infraspecific taxa);
Dahlias tend to attract quite a bit of insects, some which are dangerous and harmful to their survival. Insects like slugs, earwigs, the red spider, snails, caterpillars, aphids, and thrips threaten dahlias because they can eat the petals, leave slime trials, leave tattered petals, etc. Dahlias can also become infected with the following diseases: Sclerotinia disease, fungal diseases, mildew ...
The horticultural cultivation of the dahlia plant has resulted in over 57,000 registered cultivars of dahlia. [1] Several of them are listed below. In North America the American Dahlia Society [2] is responsible for the process of accepting a named variety as a cultivar. They also publish the list of currently found Dahlia Cultivars in North ...
Dahlia coccinea is a species of flowering plant in the daisy family Asteraceae. Its common name is red dahlia , although the flowers can be orange or occasionally yellow, as well as the more common red.
From its underground base, the plant will begin sending up hollow, cane-like, 4-sided stems with swollen nodes and large, tripinnate leaves; foliage near the ground is quickly shed. The pendant or nodding flowerheads are 7.5–15 centimetres (3–6 inches) across, with ray florets , typically a lavender or mauvish-pink in colour.
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'Moonfire' (VanDusen Botanical Garden, Stan Shebs)The following is a list of dahlia cultivars which have gained the Royal Horticultural Society's Award of Garden Merit.They are tuberous perennials, originally from South America, with showy daisy-like composite flowerheads in all shades and combinations of white, yellow, orange, pink and red, flowering in late summer and autumn (fall).
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