The genus Dahlia consists of about 35 species growing wild. They come originially from Central America, especially Mexico.
Dahlias have thick, tuberous roots in which they save nutrition for their winter rest. It is too cold in Sweden for them to survive in the earth over the winter. This is why we dig them up at the approach of frost in autumn and trim them. We store them in a cool, dry, frost-free place in winter.
Did you know?
Dahlias are Mexico’s national flower, though named in the late 1700s after Carl Linnaeus’ Swedish disciple Andreas Dahl.
Dahlias were brought to Europe in the 1700s as food, but they tasted too bad. They became popular when botanists discovered that many shapes and colours could be produced by breeding them.
Over 50,000 kinds of dahlia have been registered during the 200 years that dahlias have been bred.