Cyathea cooperi is a species of tree fern native to Australia, particularly found in the eastern coastal regions of New South Wales and Queensland. It is commonly known as the Australian tree fern or lacy tree fern, and is a popular ornamental plant in gardens and parks worldwide.The tree fern can grow up to 20 meters in height, with a trunk up to 45 centimeters in diameter. Its fronds can reach up to 4 meters in length, and are arranged in a circular pattern at the top of the trunk. The fronds are bipinnate, meaning that each leaflet is divided into smaller leaflets, giving the fern a lacy appearance.