Use a tiller or garden fork to loosen the soil 10 to 12 inches deep.
Mix 2 inches of well-rotted manure and 2 inches of organic compost with the garden soil.
Make rows with a hoe and leave at least 1 foot of space between each.
Sow the Brassica rapa seeds 1/2 inch deep. Leave 1 inch of space between each seed when planting.
Water lightly right after sowing the seeds. Continue to keep the soil lightly moist at all times.
Thin Brassica rapa seedlings when they are 2 to 3 inches high. Leave a space of 2 inches between plants that you plan to harvest for greens and at least 4 inches between plants harvested for their roots.
Spread straw around Brassica rapa when they are approximately 4 inches tall to prevent weeds and keep the roots cool.
Apply a 1-inch layer of aged compost next to each plant, approximately one month after planting the seeds.
Harvest the outermost leaves of Brassica rapa when they reach the desired size. Gather the roots when they are 2 to 3 inches wide.