Crops: The Lynch File - Why are perennial weeds still a problem in Ontario?

Though they are easier to kill than annuals, perennial weeds still cause problems because growers do not understand their biology or fail to kill them off completely


Perennial weeds are easier to kill than annual weeds. Give me a field of perennial sow thistle, quackgrass or bindweed any day instead of a field of ragweed or lambs’ quarters. When controlling perennial weeds, you have to understand where they are coming from. Once you know this and their weaknesses, they are easy to control.

Better Farming - November 2009