26 WEEDS OF THE FARM AND GARDEN 



the adjacent fields. Vehicles passing from a field infected 

 with weeds, especially when the roads are moist, are 

 sure to leave weed seeds along the roadsides. Then 

 the driving of cattle, and the carrying of grain, all 

 contribute to the weeds that are found along the road- 

 sides, and to the scattering of the same. 



The following is a partial list of 

 weeds commonly found along the 

 roadside : Poison ivy, horse-radish, 

 horseweed, bull thistle, sweet 

 clover, squirrel-tail grass, Russian 

 thistle, tumbling mustard, cockle- 

 Fig. 26. 13, 14, Canada bur, mustard, large ragweed, small 

 thistle. (C. M. King.) ragweed foxtai , crab g^ par . 



tridge pea, wild blackberry, burdock, wild morning glory, 

 milkweed, velvet leaf, and wild parsnip. 



