178 Weeds. 



Quack grass makes a good growth early 

 in the season. Its seeds usually mature in 

 August, about the same time as those of 

 timothy. It will grow in almost any kind 

 of soil, but is most partial to loams and 

 soils of a decidedly open texture. It is 

 least at home in stifif clays, and in these it 

 is much more easily destroyed than else- 

 where. 



Quack grass grows in all kinds of crops 

 from early spring until late autumn, and 

 during this entire period the work of prop- 

 agation goes constantly on by means of its 

 creeping root-stocks. When once it gets a 

 footing, its power of crowding out other 

 crops is very great. Like the Canada this- 

 tle and the perennial sow thistle, quack 

 grass also is easily distributed by means of 

 the seeds of the useful grains and grasses, 

 for its seeds ripen at the same time as those 

 of the cereals, and those of some of the 

 clovers, as for example alsike and mam- 

 moth, and those of timothy. It is also dis- 

 tributed through the agency of farmyard 

 manure, both home-made and purchased. 



Quack grass has some redeeming quali- 

 ties. It furnishes a considerable amount 

 of food of a nutritious character, both as 



