A few months ago a colleague alerted me to MossTiles, which can be attached to walls to create interior vertical gardens. They look really cool, and I assumed they consisted of some tough little moss species rooted in a mesh-enclosed planting mix. But the more I read about them, the more confused I became. They don’t need light – or fertilizer – or water (though misting them occasionally is recommended). More investigation was in order.
It turns out that these aren’t made from moss at all, but lichens – specifically reindeer moss (Cladonia rangiferina). This slow-growing lichen is harvested in Scandinavia, "stabilized" in a salt solution, glued onto tiles with a resin, then dyed one of twelve different colors.
Come on. This isn’t a plant anymore. It might as well be made out of plastic. All the misting does is keeping them from drying out and crumbling to pieces.
Even worse, reindeer moss is a major food source for caribou and other large ruminants. It’s so slow growing that it’s a threatened (and protected) species in some parts of the world. Do we really need to have preserved plants hanging on our walls like some kind of botanical trophy?
If so, be sure you’ve got a fat wallet. Installation of MossTiles costs about $200 per tile.