MAMMOTH CLOVER 221 



grown in several of the countries of Europe and 

 Western Asia. It is also grown in certain parts 

 of Siberia. It was doubtless introduced into the 

 United States from Europe by emigrants from that 

 continent, but when exactly is not known. It has 

 probably been many years since its introduction into 

 America, but it is only within the more recent of 

 the decades that it has attracted general notice. In 

 some areas in this country it grows with great luxu- 

 riance, fully equaling, if not exceeding, the crops 

 grown in any part of Europe. 



Mammoth clover calls for climatic conditions 

 about the same as those for medium red clover. 

 (See page 6i.) It flourishes best in moist climates 

 of moderate temperature, and it will endure more 

 drought than the medium red variety and possibly 

 more cold. 



The distribution of mammoth clover covers nearly 

 all the States of the Union, but as with medium 

 red clover the adaptation for it is relatively higher 

 in the Northerti than in the Southern States of the 

 Union. The highest adaptation for mammoth clo- 

 ver is probably found in certain parts of Michigan, 

 Wisconsin, Minnesota, the northern valleys of the 

 Rocky Mountain States, the elevated portions of 

 those further south and the country around Puget 

 Sound. The adaptation is also high in much of 

 New York, Ohio, Indiana, Illinois, Iowa, Missouri, 

 Kansas and Nebraska. In the Southern States that 

 lie northward, good crops may be grown in some 

 locations, but not in all. As the semi-arid belt is 

 approached, mammoth clover will grow further 



