Mentha longifolia is a spreading perennial with hairy green to grey-green leaves with a musty minty smell. It grows up to 4 feet (1.2 m) tall. The leaves are up to 4 inches (10 cm) long and 0.8 inches (2 cm) wide. Branched tapering spires of tiny pale purple or white flowers are produced from mid to late summer. Mentha longifolia is a species in the genus Mentha (mint) native to Europe excluding Britain and Ireland, western and central Asia (east to Nepal and the far west of China), and northern and southern (but not tropical) Africa. It is a very variable herbaceous perennial plant with a peppermint-scented aroma. Like many mints, it has a creeping rhizome, with erect to creeping stems 40–120 cm tall.
Mentha longifolia is a herbaceous perennial plant that can grow up to 4 feet (1.2 m) tall. Here are some step-by-step instructions to care for Mentha longifolia: