Any of these may be sown in spring and, with the exception of potatoes, twelve to eighteen inches apart. The soil must be rich and finely worked, in order that the roots will be even and smooth.
Beets do best in light soil. Those for earliest use are started under glass and set out six to seven inches apart in rows a foot apart.
Carrots also like a soil that is rather on the sandy side, and on account of the depth to which the roots go, it should be deep and fine. The quality will be better if the soil is not too rich.
Kohlrabi: While not truly a “root crop,” as the edible portion is a peculiar globular enlargement of the stem, it may be sown directly into the beds and thinned out. Frequently, however, it is started in the seedbed and transplanted.
Leek: To attain its best the leek should be started in the seedbed and transplanted to the richest, heaviest soil available. Hill up from time to time to blanch the lower part of the stalk.
Onions: It is safest to cover the bed with one-half inch to one inch of coarse sand, and sow the seed in this. To get stocky plants trim back twice, taking off the upper half of leaves each time. When planting seedlings, trim back the roots one-half to two- thirds at the time of setting out.
No vegetable needs a richer or more perfectly prepared soil than the onion, and special care must be taken never to let the weeds get a start. They are gathered after the tops dry down and wither.
Potato: If your garden is a small one, buy your main supply of potatoes from the grocery store. But if you have room, cut good seed to one or two eyes, leaving as much of the tuber as possible to each piece, and plant thirteen inches apart in rows three feet apart.
Cultivate deeply until the plants are eight to ten inches high and then shallow but frequently. As the vines begin to spread, hill up moderately, making a broad, low ridge.
While big crops may be grown on heavy soils, the quality will be very much better on sandy, well-drained soils.
Radish: To be of good crisp quality, it is essential with radishes to grow them just as quickly as possible. The soil should be rather sandy and not rich in fresh manure or other nitrogenous fertilizers, as this tends to produce an undesirable amount of leaves at the expense of the root.