Petunia, Solanaceae. Also known as winter eggplant. Perennial herbs, usually cultivated once or twice a year, with a height of 20-45 cm; The stems are creeping and sticky; Leaves are soft, oval, entire, alternate, and the upper leaves are opposite; This kind of flower is solitary and funnel-shaped. The double flowers are spherical, white, purple or all kinds of red, and with its colorful edges, they are very beautiful. The flowering period is from April to frost. Capsule; The seeds are very small. Distributed in South America, it is now widely popular in various countries. [