There are two types, which are considered different vegetables in Europe. The familiar Swiss Chard also known as silver beet, or sea kale beet has very glossy, crumpled leaves and a very long, thick stems which are sometimes colored. The stems can be cooked as a separate vegetable, or substituted for celery. Very drought tolerant.
The Leafbeet or Perpetual Spinach types--so-called because they look and taste much like spinach but do not bolt in summer heat--have narrow stems and smoother leaves with a more tender texture. Very cold-hardy.
Beta vulgaris / C,W/Matures 12-16/Harvest 3-4/Yield 240-950/Sp 6"