Broad-leaved Dock Rumex obtusifolius is food for the following moths:

0015 Orange Swift Triodia sylvina
1561 Small Copper Lycaena phlaeas
2057 Garden Tiger Arctia caja
2060 White Ermine Spilosoma lubricipeda
2063 Muslin Moth Diaphora mendica
2088 Heart and Club Agrotis clavis
2092 Shuttle-shaped Dart Agrotis puta
2109 Lesser Yellow Underwing Noctua comes
2110 Broad-bordered Yellow Underwing Noctua fimbriata
2111 Lesser Broad-bordered Yellow Underwing Noctua janthe
2114 Double Dart Graphiphora augur
2155 Dot Moth Melanchra persicariae
2231 Deep-brown Dart Aporophyla lutulenta
2254 Grey Chi Antitype chi
2289 Knot Grass Acronicta rumicis
2302 Brown Rustic Rusina ferruginea
2306 Angle Shades Phlogophora meticulosa
2361 Rosy Rustic Hydraecia micacea
2382 Rustic Hoplodrina blanda
2385 Small Mottled Willow Spodoptera exigua
2387 Mottled Rustic Caradrina morpheus