72 SOILING CROPS AND THE SILO. 



mountains and east of them, and in the cold country 

 lying north and south from the eastern half of the 

 St. Lawrence river. The highest adaptation for 

 these clovers is found south of the 5oth parallel and 

 beside the Pacific, including also the Rocky mountain 

 valleys when supplied with moisture. Next in 

 adaptation comes what was originally the forest 

 country, including certain prairie lands, which, 

 although not originally covered with timber, will 

 produce it readily. This belt lies between the upper 

 Mississippi and the New England states. The New 

 England states and the Maritime provinces of 

 Canada will grow clover, but not with that 

 luxuriance which characterizes its growth in the 

 other areas named. The greatest clover-growing 

 states on the continent include Michigan, Wisconsin, 

 eastern Minnesota, Iowa, northern Missouri, 

 Illinois, Indiana, Ohio, and parts of Montana and 

 Washington. It also grows with superlative 

 luxuriance in southern Ontario. 



Crimson clover thrives best in a climate some- 

 what warmer than is suitable for the other kinds. 

 The highest adaptation for this plant is probably 

 found in the Atlantic and Gulf states, southward 

 from New York city. It is not usually grown with 

 much success north of the latitude of Columbus, O., 

 that is to say, north of the 4Oth parallel. But for a 

 short distance north of that line it may be grown in 

 good form along the Atlantic coast and for a much 

 greater distance north of the same latitude along the 

 Pacific coast. Unless well protected, crimson clover 

 cannot withstand low temperatures. When the 

 medium, mammoth and alsike clover grow at their 



