10/16/2026
Why do some seeds need a winter chill before they grow?
Many perennial flowers and native plants won't sprout right away. They need a process called cold stratification, which mimics winter conditions and signals the seeds that it's safe to germinate when spring arrives.
There are several ways to cold stratify seeds, including refrigerating them indoors or winter sowing in recycled containers. In this video, we're introducing another simple method that lets nature do the work.
Watch Part 1 to learn why cold stratification matters, then stay tuned for Part 2, where we'll show you how to cold stratify seeds using pots and garden soil right in your own backyard.