80 CANADIAN FARM YEAR BOOK. 



WEEDS— (Continued.) 



Time of Time of 



Name. Origin. Flowering. Seeding. 



Hound's Tongue Europe July and August August and September 



Mustard Charlock Europe June to September June to September 



Oxeye Daisy Europe June to August June to September 



Purselane ^. .. Europe May to October June to October 



Pennycress Europe Junf, to September June to September 



Pigweed Red-root Tropical July to September August to October 



America 



Plantain (Several spe- Europe June to September June to September 

 des 



Ragweed Native July to September August to November 



Wild Oat Native July July and August 



Sow Thistle Europe June to August July to September 



Sorrel Europe June to October June to Octobe 



Wormseed Mustard Native June and July June to September 



Cow Cockle Europe July and August July to September 



Wild Le tuce Europe June to September July to October 



Russian Thistle Russia July to September August to November 



Shepherd's Purse Europe May to November June to November 



Lamb's Quarters Europe June to October July to November 



and America 



Tumbling Mustard Europe June to September July to September 



Ball Mustard Europe June to August July to September 



Hare's Ear Mustard. . . Europe June to Augurt July to Septembac. 



