Thin rutabaga seedlings to 6 inches apart when they are 2 inches high. Thin turnip seedlings to 2 to 4 inches apart when they are 4 inches high. The removed plants will be large enough to use as greens. If you have planted turnips for greens, start to harvest the tops as needed when they are 4 to 6 inches high. Successive plantings at 10-day intervals will provide later harvests of quality roots or greens.
Old turnips tend to be tough and woody.
When the plants are small, cultivate 2 to 3 inches deep between rows. As the plants become larger, cultivate shallowly to prevent injury to the tender roots. Pull weeds that appear in the row. Harvesting Harvesting can be done throughout the winter as needed. Both are hardy to fall frosts and light winter freezes.