Ipomoea costata, commonly known as Rock Morning Glory, is an Australian native plant. It is found in northern Australia, from Western Australia, through the Northern Territory, to Queensland. It is the source of bush potato, a bush tucker food for Aborigines. Bush potatoes are cooked in the hot earth beside the fire, and potato is still eaten in the desert today. It is a fast-growing creeper with large purplish-pink trumpet flowers.