When should I treat to kill the dandelions in my lawn?
Let them flower! It’s the best early source of food for the bees! If you need to spot treat them later, do it after they finish flowering and are going into the puff-ball stage. Best time for control is mid to late fall – second is puffball stage in spring. And yes, spot treat as needed, not spraying the entire lawn. Feed the lawn when needed – spot treat for weeds when needed (and most effective time).