Where should i place one or 2 medium peaces of rock at? Ill look for the wood. Yes, i have a lot of those plants that i showed above. I just made a big enough hole in the foam and stuck the plants in there and now they are holding. I dont think the plants on the back will stick to the foam, the ones vine ones. So while they grow ill get a very small needle and stick it in one of the leaves so it can hold.