228 CLOVERS 



Mountains and Oklahoma and Canada, spring sow- 

 ing is usually preferable, and in much of the area is 

 an absolute necessity to insure a stand. In the 

 South the seed may be sown fall or spring; which 

 season is to be preferred should be determined 

 chiefly by the character of the soil. On soil much 

 given to heaving in the winter it is usually preferable 

 to sow in the spring. In all, or nearly all, parts of 

 Canada spring sowing only is admissible. 



When the seed is sown in the early spring, it should 

 usually be sown quite early, as early, in fact, as the 

 ground is in condition to receive the seed when the 

 nurse crop has been sown the previous autumn. 

 When the ground is smooth and impacted on the 

 surface, it is considered preferable to defer sowing 

 until the ground is dry enough to admit of covering 

 the seed with the harrow. When deposited at the 

 same time as spring-sown nurse crops, and with 

 these, the time of sowing will be determined by the 

 most suitable time for sowing the nurse crop. This 

 plant may be sown under certain conditions as late 

 in the spring as moisture exists in the soil sufficient 

 to produce vigorous germination in the seed. This 

 means that it may be sown as late as June, if sown 

 alone, and even later. When sown thus late it 

 should be on soil that has been well cleaned near 

 the surface. When sown in the autumn, as with 

 medium red clover, the aim should be to put the 

 seed in as early as the arrival of the autumn rains, 

 that the plants may be well rooted before the arrival 

 of freezing weather. 



Ordinarily, mammoth clover, like the medium red, 



