Zinnia elegans (common zinnia, elegant zinnia, or youth-and-old-age), an annual flowering plant of the genus Zinnia, is one of the best known zinnias. It is native to Mexico but grown as an ornamental in many places and naturalized in several places including scattered locations in South and Central America, the West Indies, the United States, Australia, and Italy. The garden zinnia was bred via hybridisation from the wild form. Zinnias are popular garden plants with hundreds of cultivars in many flower colors, sizes and forms. There are giant forms with flower heads up to 6 in (15 cm) in diameter. Flower colours range from white and cream to pinks, reds, and purples, to green, yellow, apricot, orange, salmon, and bronze. Some are striped, speckled or bicoloured. There are "pom-pom" forms that resemble dahlias. Sizes range from dwarf varieties of less than 6 inches (15 cm) in height to 3 feet (90 cm) tall. The powdery mildew common to zinnias in humid climates is less common recently developed varieties, which are resistant. Other cultivars include 'Magellan', 'Envy Double', 'Fireworks', 'Purple Prince', 'Blue Point Purple', 'Profusion Cherry', 'Profusion Orange', 'Star Gold', 'Star Orange', and several white-flowered types such as 'Crystal White', 'Purity', and 'Profusion White'. Mixed-color seed selections are available.
Plant Mature Height: 12 - 16"
Flowering occurs between spring to fall
Zinnias grow easily and prefer well-drained, loamy soil and full sun, drought-tolerant.
They grow best in dry, warm, frost-free regions.