Beet seeds are actually little fruits, or “nutlets,” that contain one to four seeds. They are extremely easy to grow in a wide variety of soils, but do best with a neutral pH in well drained soil supplemented with finished compost.  Refrigerate beets quickly after harvesting, or store the roots around 2°C (36°F) in well-ventilated containers in high humidity. Aim for 95% humidity for best results.