Flowering occurs from June to October and the fruit is a softly-hairy follicle 10–11 mm (0.39–0.43 in) long.

[2][3][4][5][6] Grevillea treueriana was first formally described in 1875 by Ferdinand von Mueller in his Fragmenta Phytographiae Australiae from specimens collected by Jess Young.

[7][8] The specific epithet honours Adolph von Treuer, a German Consul to Australia in the 19th century.

The main threats to the species include grazing by feral animals, habitat loss, and inappropriate fire regimes.

Plants can be propagated by taking cuttings from current seasons growth, or from seed which has been nicked with a sharp knife.