The Swedes are the cruciferous family, napus variety. Cold or temperate climates need for good growth. Turnip greens and turnip greens are the leaves of turnips, which will come before flowering. Both have even more vitamins than turnips themselves. The origin of the Swedes is not well defined, it is unclear whether it originated in Central Asia or Europe. Remains have been found showing that cultivated 4,000 years ago known to the Greeks and Romans ate. During the Middle Ages was important in the diet of European countries, until the arrival of the potato in the eighteenth century, which was gradually supplanting the turnip.