Knot Grass

Acronicta rumicis


Wingspan 38mm. The forewings are grey with blackish markings. There are one or two white marks two-thirds of the way along the forewing.


Open areas like grassland, marshland and gardens. The caterpillars feed on a wide range of plants, including docks, plantains, brambles, Hawthorn and sallows.

Status and distribution

Common and widely distributed in England and Wales, less so in Scotland. Common in Nottinghamshire and at Netherfield Lagoons.

Best time to see

May to July.