River She-Oak, Casuarina cunninghamiana, 150 Seeds (Fast, Evergreen)The River She-Oak, presumed to be native to Australia, is a fast growing, medium-sized narrow evergreen tree that occurs naturally along the banks of freshwater streams, rivers and adjacent flats, commonly in sands, gravels and occasionally limestone. Typically, it grows 15 to 35 feet tall, 6 to 15 feet wide and forms a strong, buttressed trunk. It is used very successfully in streetscapes and landscapes, often planted in attractive clusters or as screening, utilizing its soft pendulous foliage and narrow habit to good effect. Adaptable to a variety of sites and poor soils, it will grow on many various sites, as long as water logging is not constant. It can also tolerate comparatively dry sites and responds well to structural pruning and can be coppiced each 5+ years to form a dense screen. The root systems of River She-Oak are vigorous and matted and it can be difficult to grow turf or other plants under these trees.