High Quality Content by WIKIPEDIA articles! Wallum, or Wallum country, is an Australian ecosystem of coastal south-east Queensland, extending into north-eastern New South Wales. It is characterised by floristically-rich shrubland and heathland on deep, nutrient-poor acidic sandy soils and regular wildfire. Seasonal changes in the water-table due to rainfall may create swamps. The name is derived from the Kabi word for the Wallum Banksia (Banksia aemula).