A. Perennial Sowthistle
B. Field Bindweed
C. Hairy Vetch
D. Canada Thistle
Select the plant that is best described by the following characteristics:
• Is a perennial weed with upright growth usually found in permanent pastures and waste areas such as roadsides
• More serious problem in areas that have cooler summers
• Difficult to control because of its creeping root stocks
• This plant was originally introduced to the North American continent as a flower
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