Quick answer
Dandelions are perennials with deep taproots. Fall treatment with a broadleaf herbicide is the most effective timing, and thick turf is the best long-term defense.
Why Fall Treatment Works
In fall, perennial weeds pull energy down into their roots, and they pull herbicide down with it. Spring treatment often only burns the top.
Hand Removal
A few plants can be dug with a weeding tool, but the whole taproot must come out or the plant regrows.
Keep Them From Coming Back
- Mow at a proper height to shade out seedlings
- Fill thin or bare spots
- Mow off flowers before they go to seed