Dahlia is a genus of bushy, tuberous, herbaceous perennial plants native mainly in Mexico, but also Central America, and Colombia. A member of the Asteraceae dicotyledonous plants, related species include the sunflower, daisy, chrysanthemum and zinnia.
There are at least 36 species of dahlia, with hybrids commonly grown as garden plants. Flower forms are variable, with one head per stem; these can be as small as 5.1 cm diameter or up to 30 cm ("dinner plate"). This great variety results from dahlias being octoploids (that is, they have eight sets of homologous chromosomes), whereas most plants have only two. In addition, dahlias also contain many transposons (genetic pieces that move from place to place upon an allele), which contributes to their manifesting such great diversity.
The stems are leafy, ranging in height from as low as 30 cm to more than 1.8–2.4 m. The majority of species do not produce scented flowers or cultivars. Like most plants that do not attract pollinating insects through scent, they are brightly coloured, displaying most hues, with the exception of blue.The dahlia was declared the national flower of Mexico in 1963. The tubers were grown as a food crop by the Aztecs, but this use largely died out after the Spanish Conquest. Attempts to introduce the tubers as a food crop in Europe were unsuccessful.
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I just bought some on the market last week! Love the bright colours. Groetjes HettyReplyDelete
Dahlia can have such stunning colors! Thank you for hosting!ReplyDelete
So beautiful! I have no luck with dahlias, the snails eat them up, before they could grow, sigh!ReplyDelete
Thanks for hosting
I have always admired Dahlias. Thank you for sharing and hosting. At this time of year in the northeast, the Hellebores are in bloom. Happy Floral Friday!ReplyDelete
Nick, splendid Dahlia. Thanks for sharing.ReplyDelete
Super information to understand the variety we see in this spectacular flower! Thanks for hosting!ReplyDelete
Just love Dahlias!ReplyDelete