Saving seeds : a home gardener's guide to preserving plant biodiversity

"Much of our food comes from seeds. But where do our seeds come from? And where are they going? For much of human history, farmers saved their own seed stocks to ensure a good harvest from year to year. In the mid-twentieth century, governments became involved in seed saving, creating massive seed libraries cataloguing thousands of varieties. This biodiversity has come under attack in recent decades, as corporations have replaced heirloom varieti...