Best time to see: Jun to mid Sep

Key facts

A tall, slender perennial with small red-brown flowers in summer whose flowers are visited by many bees and by wasps

Has a long tradition of use as a cleansing herb and, like the related foxglove, for heart conditions

Found in damp meadows and on ditch and pond banks

Extras

Stems and leaf stalks winged; leaves oval, often with two lobes at the base