Crops Grown for Their Leaves 247 
self-blanched ; but it is more subject to disease and the 
product is often of poorer quality than when given more 
room and blanched by banking with earth or by collars. 
Cabbage. . All cabbages are best grown from trans- 
planted seedlings that have been grown from 8 to 10 
weeks in a hotbed, cold frame, or outdoor seed bed. For 
early cabbages, transplant to the garden as soon as the 
danger of severe frost is over. For late varieties, trans- 
plant in June or July in the northern states and some- 
what later southward. In the plot of cabbages shown 
in Figure 142, several varieties of early and late cabbages, 
together with cauliflower and Brussels sprouts, were 
planted at the same time. 
In many parts of planting zones D and E, cabbage can 
be grown, or at least left outdoors, over winter. In 
the climate of northern Louisiana, the seedlings for the 
spring crop can be reared in cold frames from seed sown 
in November or December and transplanted in February ; 
in this way the crop is harvested in April and May. 
Sweet potatoes may then be grown on the same plot, as a 
succession crop. ‘Treated in this way in the South, the 
growing period of such a variety as New or Early 
Jersey Wakefield is from November 1 to May 1. 
Plantings of early varieties, such as Early Jersey 
Wakefield, yield heads in about go days, or early in July 
in the vicinity of New York City if planted about 
April 1; but the heads do not “keep” long in hot 
weather. It is an excellent plan to plant from 5 to 10 
plants each of several early and late varieties. For 
general culture, the ‘following varieties are excellent: 
Early Jersey Wakefield and Charleston Wakefield for early 
