Macadamia (Proteaceae Integrifolia) The Macadamia Tree is native to South Eastern Queensland and the Northern Rivers Region in New South Wales and is famous for its delicious Nuts. Growing to 25 metres tall this distinctive tree is found growing wild in Old Growth Rain Forests from Lismore in NSW to North of Gympie in Queensland. Flowering occurs in September through to late October when the trees become covered in sprays of small but abundant white flowers. The Macadamia Tree produces a rich, thick honey with a beautiful nutty flavour well sort after by Honey Connoisseurs.