The nice thing is that the roots grow through the paper very easily and make transplanting a sure thing. You actually have aabout three or four layers of paper. You can make it thicker if you want but completely unnecessasry. When making them you need to averlap by about an inch and fold this over the base. The bought ones are designed to comprss the base and hold it more firmly. It is this size which I think will make ideal little post for growing a range of plants for baby leaf salads. They could easily be grown on a windowsill.