A bunch of folks on frognet looked into this a couple years ago and found that there are tree fern products that are eco-friendly. One in particular was a source out of New Zealand where I believe the tree ferns were introduced and cause problems in native forest restoration so they harvest the tree fern understory and sell it as a product while also promoting native forest restoration. The plants themselves are widespread and very fast growers but in the past have been over exploited in some areas. Like so many things, it's best to do a little research to see if the source of tree fern panels are from a sustainable and ethical source.geckguy said:I like the look of tree fern, but try to avoid using them when possible, as they damage the tree they are cut from. Cork is fairly easy to work with. Cocos panels look great and are a renewable source, but I have yet to use them.