Looking for a tree that can thrive in poor soil conditions and shoreline situations? Consider Casuarina equisetifolia, also known as Australian Pine, Beach Sheoak, Filao Tree, Horsetail Beefwood, Ironwood, or She-oak. This evergreen tree is native to Australia, southeast Asia, and islands in the western Pacific Ocean, and is also found in West Africa. It can grow up to 100 ft tall and is an actinorhizal plant, able to fix atmospheric nitrogen. The tree's wood is used for shingles, fencing, and firewood, and it is also grown for erosion prevention and wind-breaking. It is even used as a bonsai subject in South-east Asia and parts of the Caribbean. However, beware that this tree can be an invasive species in some regions outside of its native range. Its green twigs and scale-like leaves are great for ornamental purposes and its leaves, cones, bark, and seeds have been explored for their potential in the remediation of textile dye wastewater. Consider adding the Casuarina equisetifolia to your landscape for its unique beauty and adaptability.