Leptospermum scoparium, commonly called manuka, manuka myrtle, New Zealand teatree, broom tea-tree, or just tea tree, is a species of flowering plant in the myrtle family Myrtaceae, native to Australia and New Zealand but has been introduced and cultivated in a number of countries, including the United States, Britain, South Africa and Madeira. It is typically a shrub growing to 2–5 m (7–16 ft) tall, but can grow into a moderately sized tree, up to 15 m (49 ft) or so in height. It is evergreen, with dense branching and small leaves 7–20 mm long and 2–6 mm broad, with a short spine tip. The flowers are white, occasionally pink, 8–15 mm (rarely up to 25 mm) in diameter, with five petals. They bloom in late spring (June – July).

The wood was often used for tool handles. Mānuka sawdust imparts a delicious flavour when used for smoking meats and fish. It is cultivated in New Zealand for mānuka honey, produced when honeybees gather the nectar from its flowers, and for the pharmaceutical industry. An essential oil, for which many medicinal claims are made, is produced by steam distillation of its leaves.