Allocasuarina campestris, commonly known as the Shrubby she-oak, is a shrub of the she-oak family Casuarinaceae native to Western Australia. The dioecious or monoecious shrub typically grows to a height of 1 to 3 metres (3 to 10 ft) and produces red-brown flowers from August to November. The shrub is found widely throughout the Mid West, Wheatbelt, and the south west of the Goldfields-Esperance regions of Western Australia]]. Allocasuarina campestris is used in gardens and grows in sandy or gravelly soils and is grown from seed. The species was first formally described as Casuarina campestris by the botanist Ludwig Diels in 1904. It was reclassified in 1982 in the genus Allocasuarina by Lawrence Alexander Sidney Johnson in the Journal of the Adelaide Botanic Gardens.