Dahlia

Dahlia is a genus of bushy, tuberous, herbaceous perennial plants native to Mexico, Central America, and Colombia. There are at least 36 species of dahlia, with hybrids commonly grown as garden plants. The dahlia was declared the national flower of Mexico in 1963.

Description

Dahlias are perennial plants with tuberous roots, though they are grown as annuals in some regions with cold winters. The plants are native to the high plains of Mexico and Guatemala, and they thrive in cool, mountainous climates. The plants can grow up to 6 feet tall and have flowers that range in size from 2 inches to 1 foot in diameter. The flowers come in a wide variety of colors, except for blue.

Cultivation

Dahlias are grown from tubers, which are planted in the ground in late spring. The plants prefer well-drained soil and full sun. They begin to bloom in mid-summer and continue to bloom until the first frost. Dahlias are popular plants for the garden because of their wide range of colors and shapes.

Uses

Dahlias are used primarily as ornamental plants in the garden. They are also used in floral arrangements and as cut flowers. Some species of dahlia are used in traditional medicine in their native Mexico.

Species

There are at least 36 species of dahlia, including:

• Dahlia coccinea
• Dahlia imperialis
• Dahlia pinnata

Hybridization

Dahlias are popular plants for hybridization because of their wide range of colors and forms. The first recorded dahlia hybrid was created in the Netherlands in 1872.

History

The dahlia was first discovered by Spanish botanists in Mexico in the 16th century. It was named after the Swedish botanist Anders Dahl. The dahlia was introduced to Europe in the 18th century and quickly became popular as a garden plant.

References

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