176 



AGRICULTURE ON THE PACIFIC SLOPE 



figure 92, they are 

 easily killed. Notice 

 how the first two 

 leaves differ from the 

 later ones. 



The radish looks 

 very much like the 

 mustard in the seed- 

 ling stage, but its 

 flowers are purple, 

 pink or white. 



The roots of mus- 

 tard and radish are 

 very tough and 

 hard to get rid of. 



The radish in California may live over to the next 



season, and even 



longer. 



Mustard plants 



sometimes form 



thickets growing to 



a height of eight feet 



or more. 



Milk thistle. This 



is one of our most 



beautiful weeds, 



growing to the 



height of five Or Six 



FIG. 92. Seedling of wild mustard. 

 (About natural size.) 



FlG - 93 - Seedling of milk thistle. 

 natural size.) 



(About 



