VEGETABLES AND THEIR CULTURE 



387 



farm garden crops. It fits in well with the general rotations practiced on 

 American farms, and takes the place of potatoes after clover. It returns 

 satisfactory profits wherever good markets are available. 



Jersey Wakefield is the leading early variety. Charleston Wakefield, 

 which is somewhat larger and a few days later, is also popular. Copen- 

 hagen Market is a round-headed early variety of special merit which has 

 recently come into prominence. Early Summer, Succession and All Heart 

 are very good midsummer varieties. Succession is also largely grown for 

 late use, seed being sown later than for late varieties. Flat Dutch and 

 Drumhead are well-known late sorts. Danish Ball Head is extensively 

 grown for winter use. It possesses better keeping qualities than any other 

 late variety. The heads are roundish and very solid. 



Four Strains of Jersey Wakefield Cabbage. 



Grown at The Pennsylvania State College, which show extreme variations in the 

 germinating power of the seeds. 



Cabbage requires a very rich soil for the best results. Stable manures 

 are used extensively for this crop. Commercial fertilizers containing not less 

 than four per cent of nitrogen and six to eight per cent of each of the mineral 

 elements, are also applied at the rate of one-half ton to a ton to the acre. 



Seed for the early crop should be sown in the hotbed or greenhouse 

 about ten weeks in advance of planting in the field. In most northern 

 sections the seed is sown about the first of February and the seedlings are 

 transplanted to the cold-frame about the first of March. With proper 

 frame management they will be well hardened and ready for the field April 

 10th or 15th. 



The late crop is usually started in May. Danish Ball Head requires 

 a full season and it is a mistake to sow too late, though local climatic condi- 

 tions should be carefully considered. 



