The larvae feed on a wide range of plants, including Conyza bonariensis, Cupressus, Epacris, Dianella brevipedunculata, Acacia dealbata, Eucalyptus, Pinus and Cotoneaster species.
The exposed and more infertile areas, particularly around the extreme south-west, consist largely of low growing native grasses such as the unusual buttongrass, heaths, and hardy melaleucas.
The island is being used as a translocation site for the endangered heath Epacris stuartii, which is threatened in its nearby natural habitat by Cinnamon Fungus.
These include Pink Gum, Yellow Gum, Brown Stringybark, Red Gum, Swamp Riparian, Clay Heath, vegetation communities.