Local in fens, marshes, water meadows, damp woodland and gardens throughout much of the British Isles. In Hampshire and on the Isle of Wight local in marshes, where the larva feeds within Reed Canary-grass, and occasionally in gardens, where it uses various ornamental grasses. Wingspan 32-35 mm. Generally the easiest of the Apamea to identify. Larva feeds within stems of various grasses, including Reed Canary-grass, Reed Sweet-grass and Pampas-grass.