i86 COMMON WEEDS 



spread rapidly. When the produce is to be mown it 

 should not be included in seed mixtures, as the grown 

 plants are woody in character, refused by stock, and 

 of no value in hay. 



Yarrow occurs on many soils, but is most abundant 

 on those of a dry or loamy character. It grows from 

 i foot to nearly 3 feet in height, with furrowed and leafy 

 stems. The leaves are 2 to 6 inches long, and very 

 finely divided. The flowers, which are white or pinkish, 

 appear between May and September ; they occur in 

 small heads arranged in corymbs which roughly re- 

 semble umbels. If it be desired to reduce this plant 

 where it occurs in meadows, manuring with farmyard 

 manure, nitrate of soda, or sulphate of ammonia should 

 be practised. 



Ox-eye Daisy (Chrysanthemum Leucanthemum L.), some- 

 times called ll Dog Daisy," is an erect perennial 

 with branched stems bearing large white daisy-like 

 flowers, i to 2 inches across. It is most common 

 in grass land in poor condition, especially on clays 

 and calcareous loams ; it may also occur in arable 

 land. It flowers from June to August. The free use 

 of farmyard and other manure to improve the con- 

 dition of the land has the effect of greatly diminish- 

 ing the Ox-eye Daisy. The use of salt is also recom- 

 mended by the U.S. Department of Agriculture 

 (Farmers Bull. 28). As the seeds of this weed are 

 a common impurity in grass seeds, it is necessary 

 again to advise the use of only pure seeds. In Canada 

 the Ox-eye Daisy is called Poverty Weed, and it 

 is stated that it " can be got rid of only by break- 

 ing up the sod." l The Canadian Department of Agri- 

 culture recommend 2 ploughing, and a short rotation 



1 Bull. 128, Ont. Agric. Coll. 



2 Farm Weeds, Dept. of Agric., Ottawa. 



