Oregano is a flowering plant in the mint family (Lamiaceae). It is native to temperate Western and Southwestern Eurasia and the Mediterranean region. Oregano is a perennial herb, growing from 20–80 cm (8–31 in) tall, with opposite leaves 1–4 cm (1⁄2–1+1⁄2 in) long. The flowers are purple, 3–4 mm (1⁄8–3⁄16 in) long, produced in erect spikes. It is sometimes called wild marjoram, and its close relative, O. majorana, is known as sweet marjoram.