Growing Vegetables Plants from Kitchen Scraps! A lot of foods you disregard as not edible and/or trash can in fact grow into a plant and give you more fruits and vegetables! It is an alternative way of growing a vegetable garden then growing from seed or buying a bunch of plants.
"Regrow roses!!! My neighbor has a row of roses, which he took as cuttings. I asked how he took them. He simply plunges the cuttings into the ground. But his secret of success is the humble potato! Before planting cuttings, he pushes the bottom end into a small potato, which he believes keeps the cuttings moist as they develop roots. It sounds crazy, but his row of allotment roses is proof it works. (quote from link)"