Learn the simple, cost-effective way to start seeds during the winter for beautiful, healthy plants come spring! Winter seed sowing is a method of planting seeds outdoors during the colder months, allowing them to naturally germinate in spring. It mimics nature by exposing seeds to freezing and thawing cycles, which can help improve their germination rates. This technique is particularly effective for hardy perennials, native plants, and certain vegetables that require cold stratification.