Dahlia: colours, meaning, where it grows and when it blooms

Dahlia is a genus of perennial plants with tuberous roots, native to Mexico and Central America. Its flowers appear in nearly every color except blue and come in many shapes and sizes, making them popular garden plants. Dahlias are grown for their showy blooms and are not frost hardy.

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Native to Mexico and Central America
Flowers come in nearly every color except blue
Grown from tuberous roots and not frost hardy
Most dahlias have no scent
Popular as garden and cut flowers

What does Dahlia look like?

Dahlias are bushy, perennial plants with tuberous roots. They can grow from about 30 cm up to 2.4 meters tall. The stems are leafy, and the flower heads, called capitula, are made up of many small florets arranged in a central disc with petal-like rays. Blooms vary widely in size, from small 5 cm flowers to large 'dinner plate' types up to 30 cm across. Dahlias display almost every color except blue, and most have no scent.

Where does Dahlia come from?

Dahlias are native to Mexico and Central America, where they were known and used by the Aztecs and other indigenous peoples long before European contact. Spanish explorers brought dahlias to Europe after the conquest of Mexico. The first scientific descriptions date to the late 16th century. The genus was named 'Dahlia' in the late 18th century by botanist Cavanilles, after Anders Dahl. Over time, dahlias spread across Europe and became popular ornamental plants.

When and how Dahlia blooms

Dahlias grow from tuberous roots and are generally planted in spring after the last frost. They need protection from cold, as they are not frost hardy. The plants thrive in well-drained soil and sunny spots. Dahlias are grown from tubers or seeds, and their wide genetic diversity leads to many forms and colors. Blooms appear on leafy stems, with one flower head per stem.

How Dahlia is used

Dahlias are widely grown as ornamental plants in gardens and for cut flowers. Their tubers were used for food and medicine by indigenous peoples in Mexico. Today, they are valued for their bright, varied blooms in borders, beds, and floral arrangements. Some varieties are also grown for their edible tubers and as a source of inulin.

Kinds of Dahlia

There are 49 recognized species of dahlia, with a huge variety of hybrids and cultivars. Flower forms range from small, simple blooms to large, double 'dinner plate' types. Horticulturists group dahlias by flower shape and size. Some species, like the tree dahlia, can grow much taller than typical garden types.

What Dahlia means

Dahlias have a long history in Mexico, where they were cultivated and named by indigenous peoples. The genus is named after Swedish botanist Anders Dahl. Dahlias are national flowers of Mexico and are celebrated for their diversity and beauty. Their lack of scent is offset by their vivid colors, which attract pollinators visually.

Where Dahlia is used and seen

Parc floral de ParisA botanical garden and flower park in the Bois de Vincennes, Paris

Parc Floral de la SourceA large public garden in Orléans built around the source of the Loiret river

Mendocino Coast Botanical GardensA coastal garden in Mendocino County, California with ocean views and diverse plantings

Baguio Botanical GardenA public garden in Baguio with local plants, art, and cultural displays

Flower gardenA garden space planted and arranged for flowering plants and seasonal blooms

Flower carpetPatterns made on the ground from fresh flowers or petals

Gardens by the BaySingapore’s waterfront gardens with giant Supertrees and world-class glasshouses

Traditions that use it

The Brussels Flower Carpet Bloemencorso, the Dutch flower parades National flowers and floral emblems Garden visiting and open-garden schemes Floristry, flower farming and slow flowers Community and allotment gardens

Where to see Dahlia

🇮🇳 Bengaluru · All yearLalbagh and its Glass House flower showsBengaluru's historic botanical garden, with big flower shows around Republic Day and Independence Day.

🇮🇳 Srinagar · Apr to OctThe Mughal gardens of SrinagarTerraced seventeenth-century gardens above Dal Lake, with water channels, chinar trees and flower beds.

🇮🇳 New Delhi · Feb to MarAmrit Udyan at Rashtrapati BhavanThe formal gardens of India's presidential palace, opened to the public each year in late winter.

🇮🇳 Ooty · Mar to OctOoty Botanical Garden and its May flower showA terraced hill-station garden in the Nilgiris, known for its annual summer flower show.

🇸🇬 Singapore · All yearGardens by the BayA waterfront park of giant planted towers and two cooled glasshouses with changing flower shows.

🇧🇪 Brussels · AugustThe Flower Carpet on the Grand-PlaceEvery second August, volunteers lay a carpet of begonia flowers across the paving of the main square of Brussels.

Questions people ask about Dahlia

Where do dahlias come from?

Dahlias are native to Mexico and Central America, where they grew wild and were cultivated by indigenous peoples before being introduced to Europe.

What do dahlia flowers look like?

Dahlia flowers can be small or very large, with a wide range of shapes and almost every color except blue. The blooms are made up of many small florets arranged in a star-like pattern.

Are dahlias scented?

Most dahlia species do not produce scented flowers. They attract pollinators mainly through their bright colors rather than fragrance.

How are dahlias used?

Dahlias are grown mainly as ornamental plants in gardens and for cut flowers. In Mexico, some varieties have also been used for food and traditional medicine.

What do dahlias symbolize?

Dahlias are the national flower of Mexico and are celebrated for their diversity and beauty. The sources do not mention a specific symbolic meaning.

Good reading and sources

Where this page comes from

The facts on this page come from the Wikipedia article "Dahlia", written by its contributors and used under the CC BY-SA 4.0 licence, and from its Wikidata record (CC0). Phool rewrote the text in its own words, with AI assistance, and compares every page with the article to make sure no passage is copied. It may be reused under the same CC BY-SA 4.0 licence with a link back.

It may contain mistakes. It is not medical or foraging advice: many flowers are poisonous, and traditional uses are reported, not recommended. If something is wrong, tell us. Last refreshed 2026-10-03.

Dahlia