Weed Control
Lawn Burweed: Identification and Control (Stickers)
Quick answer
Lawn burweed is a winter annual that forms the spiny burs southern lawns get in late spring. Treat it in late fall to winter while plants are small, because killing the plant after burs harden does not remove the spines. Thick winter turf prevents it.
Lawn burweed, also called spurweed or sticker weed, is the reason people cannot walk barefoot across a southern lawn by late spring. The plant itself is small and easy to kill. The problem is that its spiny burs remain sharp on the ground after the plant dies, so a perfectly effective herbicide application made too late solves nothing you can feel.
That makes this the clearest timing story in lawn weed control: treat in late fall to winter while plants are tiny, months before anyone thinks about stickers. Dense winter turf is the other half, and dormant warm-season lawns are the vulnerable ones. Size the overseeding with the grass seed calculator.
On this page
How do I identify lawn burweed?
| Trait | Lawn burweed (spurweed) |
|---|---|
| Weed type | Broadleaf |
| Life cycle | Winter annual; germinates in fall, dies in late spring heat |
| Season | Cool season; small through winter, forming burs as temperatures rise |
| How it spreads | Seed carried in the spiny burs, which attach to shoes, tires and pets |
| Leaf | Finely divided, opposite, parsley or fern-like, in a low sprawling rosette |
| Flower | Inconspicuous, tucked into the leaf joints rather than showy |
| Fruit | Small burs with sharp spines that harden as the plant matures, staying painful after the plant dies |
| Growth habit | Flat and low, easily hidden in turf until the burs form |
| What it says about the lawn | Thin winter turf, dormant warm-season grass, sandy soil and open ground |
The plant is easy to overlook precisely when it is easiest to kill. If you can see the burs, the useful treatment window has passed for this season.
Why does my lawn have stickers every spring?
Because the seed germinated the previous fall into ground that had nothing covering it. Warm-season lawns go dormant and brown for months, leaving open soil at exactly the time burweed seed wants cool moist conditions. The plants grow slowly and invisibly through winter, then race to form burs as spring warms.
By the time the lawn greens up and people are walking on it, the plant has already done its work. Killing it then removes a plant that was going to die anyway in early summer heat, while the hardened burs stay on the ground. This is why the advice sounds counterintuitive: the treatment that fixes next spring happens in late fall or winter.
Keeping winter cover helps. Options for dormant lawns are discussed in bermudagrass and centipedegrass, and general timing sits in zone 8 winter lawn care.
When should I treat lawn burweed?
Late fall to winter, while plants are seedlings. Everything else on this page is secondary to that one decision.
| Method | When | What it involves |
|---|---|---|
| Post-emergent on seedlings | Late fall to winter, while plants are small | The application that actually prevents stickers. Three-way broadleaf products work well on young burweed. |
| Pre-emergent herbicide | Early fall, as soil cools | Prevents germination entirely. Conflicts with fall overseeding, so choose one. |
| Atrazine on southern lawns | Per label, southern turf only | Used on some St. Augustine and centipede lawns for winter annuals. Not for northern lawns, and restricted in some states. |
| Spring application | After burs have formed | Kills the plant but leaves hardened burs on the ground. Largely pointless for comfort this season. |
| Keep winter turf dense | Fall | Cover on the ground denies the seed the open soil it needs. The durable fix. |
| Mow and collect | Late spring, if burs have formed | Bagging clippings removes some burs and limits spread to other areas, but it does not clear the lawn. |
| Wash down and limit spread | Late spring | Burs travel on shoes, tires and pets. Cleaning mowers between areas slows new infestations. |
Judge success the following spring, not by how the lawn looks a week after spraying. Burweed dies on its own in early summer regardless of treatment.
Which products work on burweed?
Spectracide Large Plot Weed Stop for Lawns Concentrate, 1 gal treats 42,500 sq ft of southern grass and is rainproof after 6 hours, and Ortho WeedClear Weed Killer for Lawns Concentrate, 1 gal covers up to 64,000 sq ft, though its label excludes Floratam St. Augustine. Both work on young burweed applied in the winter window.
Southern lawns have an additional option in atrazine, which is used on some St. Augustine and centipede turf for winter annual weeds, is not suitable for northern lawns, and is restricted in some states and watersheds. For prevention instead of treatment, Lesco 0-0-7 with 0.43% Stonewall Pre-Emergent, 50 lb is a granular pre-emergent covering 12,500 sq ft and Quali-Pro Prodiamine 65 WDG Pre-Emergent Herbicide, 5 lb is the sprayable prodiamine timed as soil cools in early fall.
What gear helps with burweed?
A sprayer that can cover a whole lawn in one winter session, a spreader if you prefer the granular route, and seed or plugs for thin ground.
Chapin 61800 ProSeries 4-Gallon Backpack Sprayer
$109.99A 4 gallon manual backpack with a fan tip and 3-stage filtration, enough to broadcast across a quarter to half acre in one fill.
Best for: treating the whole lawn in the winter window
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Lesco 0-0-7 with 0.43% Stonewall Pre-Emergent, 50 lb
$79.94A granular pre-emergent on a potassium carrier covering 12,500 sq ft, listed as preventing weeds for up to 4 months with no extra nitrogen.
Best for: early fall prevention with a spreader
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Scotts Turf Builder Grass Seed Bermudagrass, 4 lb
$34.97Full-sun bermudagrass seed with fertilizer and soil improver covering 1,330 sq ft new, for closing thin areas in late spring or early summer.
Best for: sunny southern lawns
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We did not test these products in person. Picks are researched from manufacturer specifications and owner manuals, engine and safety certifications where they apply, warranty terms, public recall records, and the recurring themes in verified owner reviews. We favor established brands with large review counts and parts support, match each pick to a real yard size or task, and place it in the tier where its price and capability actually belong.
Frequently asked questions
When is it too late to spray for lawn burweed?
Once the burs have formed and hardened, which is usually as temperatures rise in late spring. The herbicide still kills the plant, but the spines remain sharp on the ground for weeks afterward, so the lawn stays uncomfortable. The useful window is late fall through winter while plants are small seedlings, months before anyone notices stickers underfoot.
Why do I only notice burweed in spring?
Because it germinates in fall and grows as a small, flat, finely divided rosette that hides in turf all winter. It is genuinely hard to see until it matures and forms burs as spring warms. Warm-season lawns make it worse, since dormant brown turf gives the seedlings open ground and disguises them. Mark the calendar rather than waiting to see the plant.
Will burweed come back next year?
If the conditions repeat, yes. Burweed is a winter annual that dies in early summer heat, but its burs carry seed that spreads on shoes, tires and pets, and open winter ground lets that seed establish again. Treating in the winter window for a couple of consecutive seasons, plus keeping turf as dense as possible, reduces the population substantially.
Researched, not professional advice. This page is compiled from published specifications, manuals, labels and owner-review consensus, not hands-on testing. Follow the manufacturer's instructions and product label, and consult a qualified professional where safety, chemicals, fuel or structures are involved. As an Amazon Associate we earn from qualifying purchases.