VEGETABLES AND THEIR CULTURE 



399 



if a good crop is expected. Among the early varieties which are popular 

 and largely grown may be mentioned Fordhook and White Cob Cory. 

 Golden Bantam matures somewhat later than these varieties and is supe- 

 rior in quality. Popular midsummer varieties are Cosmopolitan and 

 Sweet Orange. Country Gentleman and Stowell Evergreen are the best 

 known late varieties. Experiments made at various experiment stations 

 show that it pays to select seed for sweet corn with as much care as for field 

 corn. If space is available it pays to start one or two hundred hills in soil 

 under glass by sowing seed two weeks before it is considered safe to set the 

 plants in the open ground. This will make an early crop and insure a good 

 stand of plants. 



Some Commercial Types of Sweet Potatoes. 1 

 -Black Spanish. B — A Long, Cylindrical Type. C — Jersey Group. 

 Bermuda. E — Southern Queen. 



D— Red 



Sweet Potatoes. — The sweet potato is not universally grown in the 

 farm gardens of the United States. It thrives onfy in warm soils and pre- 

 fers one which is sandy in character. There are numerous varieties of 

 sweet potatoes, some of the most popular being Big Stem Jersey, Yellow 

 Jersey, Red Jersey, Southern Queen, Georgia Yam, Red Bermuda, Florida 

 and Pierson. It is propagated by slips and these are obtained by bedding 

 the tubers in fine soil with the proper amount of heat and moisture. The 

 tubers soon send out sprouts and produce rooted plants which are set in the 

 field after all danger of frost has passed. Field planting should not be 



>From Farmers' Bulletin 324, U. S. Dept. of Agriculture. 



