Gabions planter lining.
Hi all, I'm toying with the idea of making raised flower beds using gabions. I intent to line the gabions with something that will prevent weeds etc from growing up from underneath, but that will also allow me to plant into the side wall of the gabion. Does anyone have suggestions for what lining material would best enable me to do this? I was thinking I need something that is porous and won't rot quickly, but I've no idea what.