To get rid of stubborn weeds without damaging your lawn, first identify both the weed and your grass, then choose the least disruptive suitable method. Pull a few young weeds by hand, improve thin or stressed turf, and use a herbicide only if its label names both the target weed and your lawn grass. No single treatment works safely on every weed in every lawn.
Identify the weed and the grass before treating
Pause before spraying or pulling. Photograph the weed and identify your lawn’s grass; a local cooperative extension service can help if you are unsure. Broadleaf weeds, grassy weeds such as crabgrass, and sedges can require different approaches. Herbicides also vary in which turf species they can be used on.
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Look for conditions that may have let weeds establish: bare patches, thin turf, shade, compacted soil, poor drainage, or mowing and watering practices that do not suit the grass. A weed’s presence does not, by itself, prove a particular soil deficiency. UC IPM explains that weed management starts with identification and prevention: UC IPM’s guidance on weed management in lawns.
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| Situation | Practical first choice | What to watch for |
|---|---|---|
| A few young, isolated weeds | Hand-pull or use a suitable weeding tool | Remove the roots where possible, and avoid leaving unnecessary bare soil. |
| Mature or spreading weeds | Identify the plant and plan control around its growth and spread | Pulling may be impractical; some perennial weeds regrow from roots left behind. |
| A thin lawn or repeated weed patches | Correct the conditions weakening the turf and repair bare spots | Removing visible weeds alone may not prevent their return. |
| A known weed that persists in established turf | Consider a label-approved selective herbicide for that weed and grass | Check the exact product label; “lawn weed killer” does not mean safe for every grass. |
| Crabgrass not yet germinated | Consider a suitable preemergent before germination | Timing is regional, and a preemergent will not remove established crabgrass. |
Pull a small number of young weeds
For a few young plants, hand removal is a sensible first step. Pull before flowers or seeds form, and try to remove the roots. Moist soil can make the job easier. A weeding tool can help with small infestations, but removing a mature, dense patch this way may be difficult, and some perennials can regrow from root fragments. University of Maryland Extension describes hand removal as an option for small crabgrass infestations: its crabgrass guidance.
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- WEED KILLER SPRAY FOR LAWNS: With a simple hose-end application, kill weeds in your lawn, including dandelions, chickweed, clover, crabgrass and foxtail with Ortho WeedClear Lawn Weed Killer Ready-to-Spray
- FAST-ACTING WEED CONTROL: This weed killer hose sprayer kills listed weeds like crabgrass, dandelion, clover, chickweed and creeping charlie down to the root and gets results with 1 application
- COVERAGE: This 32 fl. oz. container of Ortho WeedClear Lawn Weed Killer Ready-to-Spray provides up to 5,000 sq. ft. of lawn care
- HOW TO USE: Apply to listed lawn weeds that are young and actively growing by connecting your garden hose to the weed killer sprayer, sliding the switch to "ON" and spraying evenly until the lawn is wet
- WHERE TO USE: This spray weed killer for lawns won't harm lawn grasses when used as directed - use on northern lawn grasses including Bermudagrass, Buffalograss, Fescues, Kentucky Bluegrass, Ryegrass and Zoysiagrass
Repair larger or recurring problem areas
If weeds are taking hold across a patch or returning in the same places, address the turf as well as the plants. Repair bare spots with grass suited to your region and site, and consider whether shade, drainage, compaction, or an unsuitable grass type is limiting coverage. Dense, healthy turf leaves fewer openings for weeds.
Make lawn care support dense turf
- Water deeply and less often. Frequent, light watering can encourage shallow-rooted turf. Adjust watering to local weather, soil, and grass type.
- Mow at the right height for your grass. UC IPM advises removing no more than one-third of the grass blade in a mowing. Do not apply that as a fixed mowing height; suitable height depends on the turf species.
- Address compaction where it is a problem. Compacted soil can make it harder for grass to grow well; choose a remedy suited to the site.
- Avoid blanket fertilizer prescriptions. Fertilizer needs depend on grass, season, soil, and local rules. A weed is not enough evidence to diagnose what nutrients the lawn needs.
University of Delaware Cooperative Extension also emphasizes turf health and the relationship between lawn conditions and weeds in its turf weed-control guidance.
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- WHERE NOT TO USE: This weed and dandelion killer for lawns and lawn care product should not be used on Dichondra, Carpetgrass, 'Floratam' St. Augustinegrass, Creeping Bentgrass, or turfgrass where desirable clovers are present
- LAWN WEED KILLER: Scotts Weed Control for Lawns is a weed killer for grass that starts working on contact to kill even the toughest weeds down to the root
- KILLS LISTED WEEDS: This broadleaf weed killer for lawns controls over 200 listed weeds, including dandelion, clover, dollarweed, chickweed, poison ivy, henbit, oxalis, ground ivy, and purslane
- WHEN TO USE: Apply weed killer granules in the spring or early fall when broadleaf weeds are actively growing
- COVERAGE: One 14 lb. bag of Scotts Weed Control for Lawns granular weed killer covers 5,000 sq. ft.
What kills weeds but not grass?
A selective herbicide can control certain weeds while sparing specified turf grasses when it is used exactly as labeled. That is not a blanket guarantee: the product must be approved for the weed and the particular grass in your lawn. A nonselective herbicide can injure or kill grass as well as weeds, so it is generally not an appropriate spot treatment on intact turf.
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Before applying any product, read its specific label and verify:
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- LAWN FRIENDLY FORMULA: Our lawn friendly weed killer spray formula contains three proven ingredients that specifically target common lawn weeds, so it won't harm your grass (when used as directed)
- EASY APPLICATION: The continuous spray Comfort Wand weed killer sprayer applicator makes it easy to apply for lawn care, allowing for precise spray control and maximum accuracy without any pumping required
- LAWN WEED CONTROL: Use Ortho WeedClear Weed Killer for Lawns with Comfort Wand, a lawn weed killer, to kill weeds down to the root without harming your grass (when used as directed), with visible results in hours
- KILLS OVER 250 WEEDS: This broadleaf weed killer for lawns targets over 250 common broadleaf lawn weeds, including dandelions, clover, poison ivy, chickweed, and dollarweed (see product label for complete weed list)
- FAST VISIBLE RESULTS: See visible results in hours; this lawn care formula that is rainproof in 1 hour after drying, and people and pets may re-enter the treated area after the spray has dried
- That your weed is listed as a target.
- That your lawn’s grass species is permitted.
- The appropriate application timing, rate, and method.
- Any watering or mowing instructions and required intervals.
- Any delay before seeding or reseeding.
Use spot treatment only when the label allows it, and follow all label directions and applicable state requirements. The EPA label for one registered product illustrates why instructions are product-specific; it is an example, not a recommendation for all lawns: EPA product label dated June 8, 2026. For Maryland-specific herbicide timing and label considerations, see University of Maryland Extension’s lawn weed herbicide options.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Crabgrass prevention depends on timing
A preemergent herbicide is meant to act before crabgrass germinates. University of Maryland Extension uses soil temperatures above 55°F for several days as a Maryland germination cue; that is regional guidance, not a universal calendar date or threshold for every location. Follow the product label for application and watering directions, and check its reseeding delay before treating if you plan to seed. Once crabgrass is established, a preemergent intended to prevent germination will not remove it.
Quick Recap
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- LAWN WEED KILLER: Use Ortho WeedClear Weed Killer for Lawns Concentrate weed killer spray to kill over 250 listed weeds including dandelion and clover down to the root, without harming your lawn (when used as directed)
- HOW TO USE: To use, dilute with water following label directions and apply using in a tank sprayer or apply with the Ortho Dial N Spray hose-end weed sprayer to small, actively growing weeds when daytime temperatures are below 90°F
- WEED SPRAY COVERAGE: This 1 gal. container of Ortho WeedClear Weed Killer for Lawns Concentrate treats up to 64,000 sq. ft.
- FAST-ACTING WEED CONTROL: This concentrated weed killer controls listed weeds like dandelion, clover, and chickweed down to the root; it's rainproof in 1 hour and begins to show visible results in hours
- WHERE TO USE: Use broadleaf weed killer for lawns on St. Augustinegrass (not Floratam), Bermudagrass, Centipedegrass, Zoysiagrass, Buffalograss, Bahiagrass, Kentucky Bluegrass, Ryegrass, Tall Fescue, and Fine Fescue lawns
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- KILLS 460+ WEEDS AS LISTED: Kills all types of listed broadleaf weeds including dandelion, chickweed, clover and yellow nutsedge.
- VISIBLE RESULTS: This product will give you visible results in 3 hours.
- KILLS BY CONTACT: Spectracide Weed Stop For Lawns Concentrate2 kills by contact and kills weed roots.
- WHERE TO USE: Use this product on lawns – treats bluegrass, fescue, zoysia, Bermuda and perennial ryegrass.
- Do not apply to zoysiagrass just emerging from dormancy.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
