Grass and shrub seeds form the bulk of the diet, and leaves, flowers, fruit and scale insects are also eaten. The turquoise parrot has been recorded feeding on seeds of various plant species; more commonly consumed items include the fruit of common fringe-myrtle ("Calytrix tetragona"), seeds and fruit of erect guinea-flower ("Hibbertia riparia"), daphne heath ("Brachyloma daphnoides"), seeds of common raspwort ("Gonocarpus tetragynus"), "Geranium" species, black-anther flax-lily ("Dianella revoluta") and grass species such as the introduced big quaking grass ("Briza maxima") and little quaking grass ("B. minor") and members of the genus "Danthonia", members of the pea genus "Dillwynia", and small-leaved beard-heath ("Leucopogon microphyllus"). Seed of the introduced common chickweed ("Stellaria media") and capeweed ("Arctotheca calendula") are also consumed. Nectar of "Grevillea alpina", and spores from moss have been recorded as food items.