Cyathea australis is an arboreal tree-fern growing to potentially 20 m tall. It is known as the Rough Tree Fern due to the presence of shield-like plates (bases of old fronds), tubercles (knobbly bits) and masses of hair-like scales on its ‘trunk’.
Cyathea cooperi is a great, beautiful looking ornamental background or feature plant which grows best in high humidity and high soil moisture conditions. Use good quality mulches and top them up regularly as this will keep the soil moist and also provide nutrients to the shallow root system. Grow in a shady position with some protection from hot western sun for it to look its best. Responds well to small amounts of organic fertiliser.
Azolla filiculoides, Water Fern, is a member of the Azollaceae family and is a small, aquatic, free-floating fern. The fronds range in colour from green to deep red in colour. It is common in dams and other still bodies of water where it forms dense carpets.