ii6 Weeds. 



The Canada thistle comes up early in 

 May, and continues to grow until the time 

 of severe frost in autumn. It comes into 

 blossom in July and August, and matures 

 its seeds principally in the latter month, 

 but sometimes also in the former. When 

 cut off above or just a little below the sur- 

 face of the ground, it will at once put forth 

 sprouts below the point of excision, several 

 sprouts thus coming up around the parent 

 stem. 



The Canada thistle will grow in almost 

 all kinds of soils, but it docs not find a con- 

 genial home in mucks with moist bottoms. 

 It grows in all kinds of crops that are pro- 

 duced in this country. Its seeds ripen with 

 those of all the cereals, several of the clo- 

 vers, and timothy and some other grasses. 



The Canada thistle is propagated by 

 means both of its seeds and of its creeping 

 root-stocks, but more especially by means 

 of the latten? Its root-stocks penetrate the 

 soil in every direction, and in open soils to 

 distances that are almost incredible. These 

 root-stocks bear numerous latent buds, 

 which, as soon as the root-stocks become 

 broken, at once start to grow, even under 



