A Living Wall of Epiphytes?
I would like to make a "living wall" of epiphytic plants, and I was wondering if any of you have suggestions for a good material to make it out of. Basically I need a flat, vertical surface that I could mount resurrection ferns, orchids, and "air plants" (Tillandsia) on. I would even like to grow areas of moss and lichens on it, if possible.
I want something that won't rot too quickly, but treated lumber would poison the plants.
I as thinking of attaching a coco fiber mat or sphagnum moss to some kind of rot proof, non-toxic panel. But I'm not sure if this is the best approach.
Any suggestions or ideas?