Kill Dandelions and Clover in Fall — When They're Easiest to Beat
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The short answer
In fall, perennial weeds pull energy down into their roots — and a broadleaf herbicide goes with it. Spray when daytime temperatures are roughly 50–80°F, the weeds are still green, and no rain is expected for 24 hours. Treat about two weeks after your last mow or before.
Broadleaf Weed Killer for Lawns
Kills dandelion and clover without killing grass.
Spring spraying often burns the leaves while the root survives. Fall spraying rides the plant's own sugar flow down to the root, so you get a more complete kill and fewer weeds next spring.
How to spot-spray
- 1Read the label — follow its temperature range and grass-type list exactly.
- 2Skip mowing 2 days before and after so there's leaf to absorb it.
- 3Spray weeds until wet, not dripping.
- 4Keep off newly seeded areas until they've been mowed several times.
| Weed | Fall treatment |
|---|---|
| Dandelion | Spot-spray; very effective in fall |
| White clover | Spot-spray; may need a repeat in 3 weeks |
| Creeping Charlie | Fall is the main window; repeat once |
| Crabgrass | Annual — it dies with frost; use pre-emergent in spring |
Frequently Asked Questions
- Is it too late to spray weeds in late October?
- Not if weeds are green and days reach about 50°F. After hard freezes, wait until spring.
- Can I spray weeds and overseed at the same time?
- No. Most broadleaf products harm new seedlings. Check the label waiting period.
The Gear We’d Buy
Everything referenced in this guide, in one place.
Broadleaf Weed Killer for Lawns
Top pickKills dandelion and clover without killing grass.
Typically $15 - $30
1-Gallon Pump Sprayer
Precise spot-spraying.
Typically $15 - $30
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Key Takeaways
- Fall is the best time for broadleaf weeds.
- Spray in the 50–80°F window, weeds still green.
- Keep herbicide off new seed.
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Reviewed by
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We buy, borrow and break lawn tools on our own yards — clay in the back, sand-cut Bermuda in the front — and write down what actually changed the result.
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Top pick
Broadleaf Weed Killer for Lawns