I am about to build my first elevated bed out of untreated cedar. My goal is to keep it as toxin-free and organic as possible. I need it to drain properly as well.
On the very bottom, on top of the cedar planks, I am going to use galvanized steel fencing wire, as a mesh. Is that going to leak anything into the soil?
More importantly, what should I use on top of the mesh? I've read about cardboard (not fully organic), newspapers (ew, ink) and landscaping fabric - all of which have drawbacks. I am starting to think I should just arrange a layer of 1-2" pebbles and dump the soil on top of it.
Can you provide advice on organic bottom for elevated garden beds?