I find most of the lawn chemicals in HomeDepot and Lowes over priced and not that great. Amazon has a lot more at better prices. My recommendation is Trimec on Amazon for broadleaf weeds. Get a hose end sprayer you can refill with the concentrate. The best time to kill broadleaf lawn weeds is May into mid June and again in Sept. Typically you will need to spray a second round about two weeks after the first. Follow the label directions. If you have crabgrass that got past the crabgrass pre-emergent then Quinclorac. I would not suggest buying a broadleaf and crabgrass killer all-in-one.
All this needs to be timed with any planned seeding or overseeding.
Fall and spring pre-emergent for crabgrass.
All this needs to be timed with any planned seeding or overseeding.
Fall and spring pre-emergent for crabgrass.