264 CLOVERS 



The prairie areas of Canada, westward from Lake 

 Superior to the mountains, do not grow white clo- 

 ver with much success, and the adaptation for its 

 growth would seem to lessen gradually until the 

 Rocky Mountains are approached. 



Soils. — Small white clover will grow on almost 

 any kind of soil, but by no means equally well. 

 Highest, probably, in adaptation, especially when 

 climatic conditions are considered along with those 

 of soil, are the clay loams west of the Cascade 

 Mountains and northward from California to 

 Alaska. During the moist months of early sum- 

 mer, this plant turns the pastures in these areas into 

 a flower garden. Almost equally high in adapta- 

 tion are the volcanic ash soils of the Rocky Moun- 

 tain valleys. W'hen amply supplied with water, the 

 finest crops of white clover can be grown even supe- 

 rior to those grown on the lands described above. 

 Almost the same may be said of what are termed 

 the hardwood timber soils, which are usually made 

 up of clay loam lying upon clay. Such areas abound 

 in Minnesota, AVisconsin, Michigan, Ontario and 

 some States further south. In these soils it grows 

 with mucli hixuriance, more especially when lime 

 and potash are abundant. Similar luxuriance may 

 be looked for in the deposit soils of river basins in 

 which the clay element predominates, but not in 

 those that are largely made up of sand. It will also 

 grow well on the stiffest clays, whether white or 

 red, when moisture is present. On prairie soils, the 

 success attending it is dependent largely on their 

 texture, composition and the moisture which they 



