Originally Posted by Blade Runners
We just put in a fescue lawn about 25k in size. We have always had a problem with wild onion even before putting in the new lawn. What is the best herbicide to use to get rid of it, and what time of the year should I apply? I have Tenacity but was wondering if there is something to better handle wild onion.
This is for my own lawn.
We use Cool Power, or 4 speed on all of our fescue lawns in middle TN in late fall and early spring, after the second mowing of the new seeded grass. They will smoke all of your cool season weeds. I would do a blanket spray of the entire lawn, you can't always see newly emerged weeds when spot spraying. Save your Tenacity to spot spray crabgrass next year.