Is your beautiful centipedegrass lawn being invaded by pesky weeds? Imagine a carpet of vibrant green, ruined by stubborn invaders like dollarweed or clover. It’s frustrating! Centipedegrass is a popular choice because it needs less care, but finding a weed killer that works without harming this delicate grass is a real challenge.
Many general weed killers can actually burn or kill your prized centipede grass. You want strong weed control, but you need safety first. Choosing the wrong product leads to bare patches and more work later. This common dilemma stops many homeowners in their tracks.
This guide cuts through the confusion. We will show you exactly which herbicides are safe and effective for your lawn. You will learn to identify the best ingredients and application tips for a weed-free, healthy centipede lawn. Keep reading to discover the secrets to maintaining that perfect green carpet all season long.
Top Weed Killer For Centipede Grass Recommendations
- ✔️EASY MIX PACKET NO measuring required!
- ✔️PROFESSIONAL GOLF COURSE QUALITY
- ✔️FAST ACTING
- ✔️KILLS DANDELIONS 120 MORE
- ✔️SAFE ON ST. AUGUSTINE+ ALOT MORE
- One quart treats 3,720 sq ft
- Controls Weeds in St. Augustine and Centipede Grasses
- Package Weight: 1.021 kilograms
- Package Dimensions: 5.842 L x 19.177 H x 12.954 W (centimeters)
- Two in one fertilizer and weed control. Controls 200+ broad leaf types.
- Controls Dollar Weed, Wild Onion, Dandelions, Chickweed, Henbit, Spurge. See label or full list.
- Provides slow release Nitrogen, high Iron content and post-emergent broadleaf weed control.
- A 20 lb bag covers up to 5,000 square feet. Only needs to be applied twice a year.
- Apply to pre-moistened grass or early morning dew. Do not water for 24 hours following application.
- QUICK NITROGEN BOOST: Scotts Liquid Turf Builder with Plus 2 Weed Control is a weed killer and grass fertilizer for lawns that gives a quick boost of nitrogen while controlling weeds
- EASY-TO-USE: To apply the lawn food and weed killer spray, simply attach this hose-end applicator to your garden and spray lawn; apply when weeds are actively growing for best results
- BROADLEAF WEED KILLER: This weed killer for lawns with grass fertilizer targets buckhorn, chickweed, ground ivy, henbit, knotweed, lambsquarters, oxalis, pigweed, plantain, poison ivy, ragweed, and spurge
- KILLS LISTED WEEDS: This lawn weed killer plus fertilizer kills dandelions, clover, and other listed lawn weeds
- COVERAGE: Scotts Liquid Turf Builder with Plus 2 Weed Control 32 fl. oz. Ready-To-Spray covers up to 6,000 sq. ft. for warm season lawns and 4,000 sq. ft. for cool season lawns
- Kills many broadleaf weeds
- Also used in centipede grass
- Provides suppression of crabgrass
- Controls emerged weeds and weeds from seed
- For use on 9 turf types
- Controls a wide range of lawn weeds
- A patented combination of 3 proven weed killers
- Directions for use in conventional & hose end sprayers
- Recommend to use - Surfactant for Herbicide - for increased performance
- WEED KILLER FOR LAWNS: Ortho WeedClear Lawn Weed Killer Ready-To-Spray3 weed killer sprayer kills weeds including dandelions, dollarweed, chickweed, and clover without harming your lawn (when used as directed)
- WHERE TO USE: Use this weed spray on Southern lawns including Bahiagrass, Bentgrass, Bermudagrass (hybrid and common), Buffalograss, Centipedegrass, Fescue, Kentucky Bluegrass, Zoysiagrass, and St. Augustinegrass (except Floratam)
- FAST-ACTING WEED CONTROL: This weed killer hose sprayer kills over 250 weeds (see label for complete list) and produces results in hours
- HOW TO USE: Apply this broadleaf weed killer for lawns by attaching bottle to your garden hose and spraying the area you want to treat
- COVERAGE: This 32 fl. oz. bottle of Ortho WeedClear Weed Killer for Lawns Ready-to-Spray3 is a hose end sprayer that treats up to 10,600 sq. ft. (varies by grass type, see label for application rates)
Choosing the Right Weed Killer for Your Centipede Grass Lawn
Centipede grass is a beautiful, low-maintenance lawn. However, weeds can quickly ruin its look. Finding the right weed killer is crucial. You need a product that kills weeds without harming your valuable turf. This guide will help you pick the best option.
Key Features to Look For
When shopping for a weed killer for centipede grass, several features matter most.
- **Centipede Grass Safety:** This is the most important feature. The product must be labeled safe for centipede grass. Some chemicals hurt this sensitive grass.
- **Weed Spectrum:** Check what weeds the product targets. Do you have broadleaf weeds (like clover) or grassy weeds (like crabgrass)? Choose a killer that handles your specific problems.
- **Pre-Emergent vs. Post-Emergent:** Pre-emergents stop seeds from sprouting. Post-emergents kill weeds already growing. Many homeowners use both for full control.
- **Application Type:** Do you prefer a liquid spray or dry granules? Liquids often work faster. Granules are easier for large areas.
Important Materials and Ingredients
The active ingredients determine how the weed killer works. Always check the label for these materials.
Active Ingredients
For post-emergent control on centipede grass, look for products containing **Atrazine** or **2,4-D** derivatives, but use these with extreme caution and only when the grass is healthy. Many modern, safer options use specialized blends. For pre-emergents, ingredients like **Pendimethalin** are common for preventing grassy weeds. Be aware that centipede grass is sensitive to many common herbicides. If the label doesn’t specifically mention centipede grass safety, avoid it.
Inert Ingredients
These are the “other” things in the mix. They help the active chemical stick to the weed or spread evenly. Good inert ingredients ensure better coverage and rainfastness (resistance to washing off).
Factors That Improve or Reduce Quality
The quality of your weed killer depends on its formulation and how you use it.
Factors That Improve Quality
- **Selective Action:** A high-quality killer is highly selective. It targets the weed’s biology but leaves the centipede grass unharmed.
- **Systemic Action:** Systemic killers move through the entire weed, killing the roots. This provides long-lasting results.
- **Temperature Range:** The best products work well within a specific temperature band suitable for your region.
Factors That Reduce Quality
Using the wrong product significantly reduces quality. **Over-application** is a major problem. Applying too much product stresses the centipede grass, causing yellowing or even death. Also, applying weed killer when the grass is already stressed (due to drought or extreme heat) reduces effectiveness and increases the risk of turf damage.
User Experience and Use Cases
How easy the product is to use affects your overall satisfaction.
Ease of Use
Ready-to-spray liquids are often preferred by homeowners for spot treatment. They require less mixing. Granular products save time when treating large yards, but you need a spreader for even distribution. Always follow the mixing ratios exactly when using concentrates.
When to Apply
Timing is everything for centipede grass. Apply pre-emergents early in the spring before soil temperatures warm up. Post-emergents work best when weeds are young and actively growing. Never apply herbicides to centipede grass when temperatures exceed 90°F, as this can cause immediate burning.
10 FAQs About Centipede Grass Weed Killers
Q: Can I use a general weed killer on my centipede lawn?
A: No, you should not. Centipede grass is sensitive. Many general weed killers will seriously damage or kill it. Always choose a product specifically labeled safe for centipede grass.
Q: What is the best time of year to apply pre-emergent?
A: Apply pre-emergent herbicides in early spring, usually around March or April, before soil temperatures consistently reach 55°F. This stops crabgrass seeds from sprouting.
Q: Can I spot-treat weeds instead of spraying the whole lawn?
A: Yes, spot treating is a great method. It saves product and reduces chemical exposure to your healthy grass. Use a small pump sprayer for targeted application.
Q: Why did my centipede grass turn yellow after applying weed killer?
A: Yellowing often happens due to over-application or applying the product during very hot weather. Check the label rates again, and ensure the grass was not stressed before treatment.
Q: How long must I wait after applying weed killer before letting pets or children on the lawn?
A: This varies by product. Always read the label for “re-entry restrictions.” Usually, you must wait until the treated area is completely dry.
Q: Are there any weeds I should *never* try to kill on centipede grass?
A: Yes. Some grassy weeds are nearly impossible to kill without harming the centipede grass itself. Broadleaf weeds are usually safer to target.
Q: What is the difference between Atrazine and 2,4-D for my lawn?
A: Atrazine is often used for pre-emergent and early post-emergent control of certain grassy and broadleaf weeds. 2,4-D is a common broadleaf killer. You must find formulations specifically balanced for centipede tolerance.
Q: Do organic weed killers work on centipede grass?
A: Some organic options, like horticultural vinegar, kill everything they touch, including your centipede grass. Choose natural products very carefully, as they are often non-selective.
Q: What should I do if the product instructions are confusing?
A: If instructions confuse you, call the manufacturer’s support line or consult a local lawn care professional. Incorrect mixing ruins the application.
Q: How often can I safely apply post-emergent weed killer?
A: Follow the label’s suggested interval, usually every 3 to 4 weeks during the growing season. Do not apply more frequently than recommended.