They are called tubers.
dahlia
A Dahlia forms a tuber from which fibrous roots grow.
dahlia, asparagus
Aztecs used to eat the tubers. Now we just enjoy the flowers.
Dahlias are flowering plants, specifically herbaceous perennials. They have tuberous roots from which their stems and flowers grow.
It was named after the Swedish botanist Anders Dahl.
Dahlia is called "डेलिया" in Marathi.
A common adaptation for dahlias is their ability to store water in their tuberous roots, allowing them to withstand periods of drought. Additionally, many dahlia species have evolved bright, showy flowers to attract pollinators for successful reproduction.
The Dahlia is the Mexican national flower.Dahlia pinnata is the national flower of Mexico. Dahlias originated from the mountainous regions of Mexico and Central America and Colombia. Dahlia pinnata is a genus of bushy, summer and autumn flowering plant. Dahlia pinnata flowers are species having tuberous roots and showy rayed variously colored flower heads.Facts about Dahlia pinnataDahlia pinnata is a tuberous perennial, growing to 1 m tall.The Dahlia pinnata flower petals are used in salads.The Dahlia pinnata flowers are hermaphrodites and are pollinated by insects.The first modern dahlia hybrids are the result of crossing between Dahlia coccinea and possibly Dahlia pinnata.Dahlia pinnata is used as food plants by the larvae of some Lepidoptera species.Mexicos national flower is called Noche Buena.Atleast that's what my parents told me.DahliaMexico's national flower is the Dahlia. It looks like a chrysanthemum, but it is smaller and more rounded at the tip than a chrysanthemum. They are very pretty flowers.
A dahlia is a pretty flower and the Black Dahlia was a pretty woman who was murdered in a very gruesome way.
Many growers will put the pot with the dahlia tuber in the ground because it is easier for them to lift it in the fall. It is best to put a stake near the tuber right away rather than try to put one in later and damage the roots or tubers.
Dahlia flower is called "दलिया" (pronounced as daliya) in Sanskrit language.