10. Leeks
Leeks regrow in much the same way as green onions, but they take a little longer. After cutting off the green tops, save the white base with roots attached. Place the root end in a jar of water, and set it on a sunny windowsill. Change the water every few days. You’ll see green shoots appear within a week. Once the roots grow stronger, transfer the leek to soil and continue watering. It will regrow into a full, usable stalk.
Read More: The Best Ways to Remove Pesticides from Your Fruit and Vegetables