Dahlia is a genus of flowering plants that is native to Mexico, Central America, and South America. It is a member of the Asteraceae family and is named after the Swedish botanist Anders Dahl. The plants produce large, showy flowers in a wide range of colors and forms, including single, double, and cactus varieties.
Dahlias are popular garden plants, grown for their attractive blooms and ease of cultivation. They are often used in borders, beds, and containers, and can also be grown as cut flowers. The plants prefer full sun and well-drained soil, and can be grown in a range of climates.
In addition to their ornamental uses, dahlias can also be used as companion plants in the garden. They are known to attract pollinators such as bees and butterflies, and can help to deter pests such as nematodes and aphids. Some plants that are commonly grown as companion plants to dahlias include marigolds, petunias, and zinnias.
Overall, dahlias are a versatile and attractive plant that can add color and interest to a range of garden settings.