After you’ve boiled a pot of pasta or potatoes, ever wonder what you can do with all that leftover starchy water? Instead of pouring it down the drain, let it cool to room temperature and reuse it to water your garden. The residual starch in the water actually spurs the nutrients in the soil, which helps feed the plants, making them stronger. In essence, they are carbo-loading for strength! Just remember this one tip: Don’t add any salt to the water when cooking, since salt is harmful to all plants.