Here's a fun experiment to try at home with a leftover garlic clove: Grow a new garlic plant. Fill a small pot with potting soil, and stick the garlic clove into the soil so the root end is immersed and the top part is right below the surface. Water the plant and place it in a warm, sunlit spot in the house like a windowsill. In a few weeks, the garlic clove will start growing new shoots. Over time, the clove will multiply until you have a whole new garlic bulb.