So you would like to arrange your beautiful flowers that you just picked out of your garden but you do not have that green foam do not worry. You just need a potato - still all of the flower stems in a large baked potato. All you have to do is cut it in half and poke some holes in it and stick the flowers in. And the potato will also act as great nutrients for the flowers much more so than the green foam that you would have to overspend money on!!