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The official register is The International Register of Dahlia Names 1969 (1995 reprint) which is updated by annual supplements. The original 1969 registry published about 14,000 cultivars adding a further 1700 by 1986 and in 2003 there were 18,000. [ 23 ]
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 ...
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);
'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).
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.
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After some Dahlia species were brought from Mexico to Europe in the 16th century, D. imperialis was first described in 1863 by Benedikt Roezl (1823–1885), the great Czech orchid collector and traveller who, ten years later (in 1872–73), embarked on a plant odyssey through the Americas.
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