The Australian Tree Fern in native to several areas on the eastern side of Australia. It is a faster growing tree fern that can get to a height of over forty feet. The two photos from my garden in San Diego show potential height. I have several with twenty-five feet of trunk. I’m about 8 miles from the ocean and they take my sun fairly well. Trunks can get up to twelve inches thick although most are more thin. This species is a bigger alternative to the Tasmanian Tree Fern and has a thicker trunk and longer leaves. It tolerates coastal sun or part day sun. It is cold hardy into the upper twenties or lower. It’s fairly fast growing and one just needs to keep up on the water. If it goes downhill it’s almost always lack of water. Otherwise it’s quite easy to grow.