Dalhia

Dalhia is commonly used as a misspelling or variant spelling of Dahlia, a genus of flowering plants in the family Asteraceae. Dahlia species are native to Mexico and Central America and have become a widely cultivated ornamental plant in temperate regions. The genus comprises about 42 species and thousands of cultivars, created by hybridization with other species; many bloom forms have been developed.

Plants are herbaceous perennials with tuberous roots; in cool temperate climates they are grown as annuals. They typically reach heights from 0.3 to 1.5 meters, depending on cultivar. Leaves are large and compound with multiple leaflets; flowers are showy heads with numerous petals, ranging in color from white to red and purple. Blooming occurs from midsummer to autumn, after frost-free conditions.

They are propagated primarily by dividing tubers in spring or by cuttings; many cultivars require staking. In horticulture, Dahlia has several cultivar groups including decorative, ball, cactus, semi-cactus, anemone, waterlily, peony-flowered, and pompon forms.

Named in honor of the Swedish botanist Anders Dahl, the genus Dahlia is valued for its diverse flower forms and long-lasting blooms. It is widely used in gardens and as cut flowers, contributing to borders, containers, and arrangements.