You can’t grow a turnip from scraps, but you can grow turnip greens to enjoy in salads! In fact, this same method works for carrot tops and beet greens too. Make sure you buy root vegetables that still have the greens attached. Then, cut them about two inches from the top and place the tops in water, cut side down. Keep them in the sun and make sure you keep the water level consistent. Harvest greens as you need them.