I wanted a flowerbed on my patio, but didn't want to spend any money on it, nor build something difficult. So I got the idea of using the edge tile on the patio and raise it to be upright and build the flowerbed with those. So this is what I did. I raised all the outer tiles. I took a board along side the inside of the tile and another board in the bottom to push them together. I took a plastic edging for keeping the weeds away and newspaper and then compost soil and planted flowers.