Weed Scientists Rank the Worst Weeds
The Weed Science Society of America asked its members to identify the most troublesome weeds as well as the most common weeds in their respective states. They considered herbicide resistance, frequency and crop affected by the weeds while making their rankings.
Many of the top ten are more problematic in traditional agriculture, but I know you landscape contractors will agree with many of these choices! So without delay, I give you the results!