Choosing the best weed killer for Dallisgrass is essential for eliminating one of the most persistent perennial grassy weeds found in lawns, golf courses, parks, and commercial landscapes. Dallisgrass (Paspalum dilatatum) develops deep fibrous roots and short rhizomes that enable it to survive mowing, drought, and repeated mechanical removal, making effective herbicide selection critical for long-term control.
Dallisgrass spreads through both seeds and underground growth, producing coarse clumps that compete aggressively with desirable turfgrass for water, sunlight, and nutrients. Selecting the proper herbicide depends on whether the infestation occurs in Bermuda grass, Zoysia grass, St. Augustine grass, centipede grass, or non-crop areas where total vegetation control is acceptable.
Systemic herbicides move throughout the plant to eliminate roots and growing points, while selective herbicides target Dallisgrass with minimal injury to compatible turf species. Combining herbicide applications with proper mowing, irrigation, and fertilization practices significantly improves long-term management.
In this guide, we review the top 10 best weed killer for Dallisgrass products that provide dependable control of established plants while helping prevent future infestations in lawns, landscapes, and managed turf.
Top 10 Best Weed Killer For Dallisgrass
1. Celsius WG Herbicide – Best selective weed killer for Dallisgrass in warm-season lawns
Celsius WG Herbicide is the best selective weed killer for Dallisgrass in warm-season lawns because it controls many difficult grassy and broadleaf weeds while remaining compatible with several established warm-season turf species when used according to label directions. Its combination of three active ingredients attacks weeds through multiple biochemical pathways, improving overall effectiveness. Consequently, treated Dallisgrass gradually weakens while desirable turf continues growing. This selective action makes it a favorite among professional lawn managers.
The formulation contains thiencarbazone-methyl, iodosulfuron-methyl-sodium, and dicamba, which inhibit amino acid production and disrupt normal plant hormone regulation. As protein synthesis slows, Dallisgrass loses its ability to produce healthy new tissues and root growth gradually declines. Therefore, treated plants become progressively weaker before complete control occurs. Multiple modes of action also support resistance management.
Celsius WG performs particularly well on established Bermuda, Zoysia, and St. Augustine lawns where labeled. Additionally, it controls numerous other troublesome weeds with a single application program. Following label recommendations helps maximize turf safety. Overall, it is one of the most versatile selective herbicides available.
Pros
- Selective control
- Professional grade
- Broad spectrum
- Systemic action
- Reliable
- Warm-season safe
- Multiple modes
Cons
- Premium price
- Mixing required
- Slow results
2. Tribute Total Herbicide – Best professional herbicide for Dallisgrass control
Tribute Total Herbicide is the best professional herbicide for Dallisgrass control because it provides exceptional post-emergent control of difficult grassy weeds in managed warm-season turf. The systemic formulation moves throughout treated plants after foliar absorption, reaching actively growing crowns and roots. Consequently, Dallisgrass becomes progressively weaker following treatment. This internal movement improves long-term suppression compared with contact herbicides.
- Date stamped on packaging is the Manufacturing Date, NOT an expiration date.
Its active ingredients inhibit the ALS enzyme, preventing the production of branched-chain amino acids required for normal cell division and plant development. Without these essential compounds, root growth slows before new shoots stop developing. Therefore, mature Dallisgrass gradually declines after treatment. Rotating herbicide groups further supports resistance management.
Tribute Total is widely used by golf courses, sports turf managers, and professional landscapers because of its dependable performance. Furthermore, it controls several difficult grassy weeds with excellent turf compatibility on labeled species. Proper application timing improves results. Overall, it is a premium solution for persistent infestations.
Pros
- Professional quality
- Systemic
- Excellent control
- Broad spectrum
- Reliable
- Turf compatible
- Long lasting
Cons
- Expensive
- Mixing required
- Professional use
3. Roundup Pro Concentrate – Best systemic weed killer for Dallisgrass in non-turf areas
Roundup Pro Concentrate is the best systemic weed killer for Dallisgrass in non-turf areas because it provides complete vegetation control where preserving desirable grass is unnecessary. The glyphosate formulation moves through leaves into underground roots and growing points, eliminating the entire plant rather than only the visible foliage. Consequently, mature Dallisgrass clumps are far less likely to regenerate after treatment. This systemic action delivers dependable root control.
- Protect gardens, lawns and landscaping with quality herbicides
- Roundup Pro is ideal for trim and edge applications, turf renovation, weeding shrub beds and removing brush and vines.
Glyphosate inhibits the EPSP enzyme, preventing the synthesis of aromatic amino acids required for protein production and continued growth. As protein formation stops, roots gradually lose their ability to support healthy new shoots. Therefore, treated Dallisgrass slowly dies from the roots upward. Thorough leaf coverage greatly improves translocation throughout the plant.
Roundup Pro is commonly used along fence lines, sidewalks, gravel driveways, industrial sites, and landscape renovation projects. Additionally, the concentrated formula provides excellent coverage for larger properties. Careful spot applications help protect nearby desirable turf. Overall, it remains one of the industry’s leading non-selective herbicides.
Pros
- Root kill
- Systemic
- Professional
- Broad spectrum
- Concentrated
- Reliable
- Excellent coverage
Cons
- Non-selective
- Mixing required
- Slow symptoms
4. Certainty Turf Herbicide – Best ALS herbicide for Dallisgrass
Certainty Turf Herbicide is the best ALS herbicide for Dallisgrass because it delivers selective post-emergent control of several difficult grassy weeds in labeled warm-season turf. After foliar absorption, the active ingredient moves internally throughout susceptible plants before reaching actively growing tissues. Consequently, Dallisgrass gradually loses vigor over several weeks. This systemic movement enhances long-term suppression.
- Certainty Turf Herbicide is a selective, post-emergent herbicide that controls labeled weeds in residential and commercial turf.
- Combined with a non-ionic surfactant, Certainty Turf Herbicide attacks nutsedge through broadcast applications or spot treatments.
The active ingredient, sulfosulfuron, inhibits the ALS enzyme, preventing branched-chain amino acid production required for cell growth and protein synthesis. Without these amino acids, new roots and shoots fail to develop normally. Therefore, treated weeds become progressively weaker before complete control occurs. The systemic chemistry also helps reduce regrowth from established crowns.
Certainty performs particularly well on selected warm-season turfgrass species when applied according to the label. Furthermore, professional turf managers value its dependable performance against difficult perennial weeds. Accurate application improves both safety and effectiveness. Overall, it remains one of the leading selective herbicides for managed turf.
Pros
- Selective
- Systemic
- Root control
- Professional
- Reliable
- Long lasting
- Broad use
Cons
- Slow action
- Premium cost
- Mixing required
5. Pylex Herbicide – Best herbicide for Dallisgrass in Bermuda grass renovation
Pylex Herbicide is the best herbicide for Dallisgrass in Bermuda grass renovation because it provides highly effective post-emergent control of several difficult grassy weeds under carefully managed application programs. The active ingredient moves into actively growing tissues after foliar absorption, gradually suppressing weed development. Consequently, repeated applications significantly weaken mature Dallisgrass infestations. This makes it valuable during turf renovation projects.
- Selective Herbicide: Fast-acting topramezone formula controls grass and broadleaf weeds; selective post-emergence liquid concentrate for established turf
- Active Ingredient: Contains topramezone 29.7% (equivalent to 2.8 pounds per gallon); systemic herbicide with foliar and root absorption
The active ingredient, topramezone, inhibits the HPPD enzyme, preventing carotenoid production that protects chlorophyll during photosynthesis. Without carotenoids, chlorophyll rapidly degrades under sunlight, causing treated weeds to bleach before dying. Therefore, Dallisgrass gradually loses the ability to produce energy required for continued growth. Combining proper timing with sequential applications improves overall control.
Pylex is frequently selected by professional turf managers because of its effectiveness against difficult grassy weeds. Additionally, following label directions carefully helps minimize turf injury while maximizing weed suppression. Patience is important because complete control often requires multiple treatments. Overall, it is an excellent specialty herbicide for severe infestations.
Pros
- Professional
- Systemic
- Strong control
- Reliable
- Specialty product
- Effective
- Turf renovation
Cons
- Multiple treatments
- Premium price
- Careful application
6. MSM Turf Herbicide – Best sulfonylurea herbicide for Dallisgrass in warm-season turf
MSM Turf Herbicide is the best sulfonylurea herbicide for Dallisgrass in warm-season turf because it provides selective post-emergent control of several difficult grassy and broadleaf weeds in labeled turfgrass species. The active ingredient is absorbed through foliage before moving throughout the plant to suppress actively growing tissues. Consequently, Dallisgrass gradually weakens while desirable turf continues developing normally when used according to label directions. This systemic activity improves long-term weed suppression.
- POWERFUL SELECTIVE WEED CONTROL: Azion XP contains 60% metsulfuron-methyl; the same active ingredient as Manor Herbicide. Metsulfuron herbicide selectively targets weeds in Bermudagrass and St. Augustine grass.
- IDEAL FOR EMERGED WEEDS IN BERMUDAGRASS AND ST. AUGUSTINE GRASS: Designed for selective post-emergence weed control, Azion XP herbicide concentrate targets difficult grassy and broadleaf weeds including ryegrass, foxtail, and Virginia buttonweed. Azion excels in Bahiagrass takedown growing in Bermudagrass and St. Augustine grass. Refer to the product label for a complete list of weeds controlled.
The active ingredient, metsulfuron-methyl, inhibits the ALS enzyme, preventing the synthesis of branched-chain amino acids required for cell division and protein production. As these essential compounds become unavailable, root growth slows before new shoots stop developing. Therefore, mature Dallisgrass gradually loses vigor until complete control occurs. Rotating herbicide groups helps reduce the potential for herbicide resistance.
MSM Turf Herbicide performs well on golf courses, sports fields, and professionally managed warm-season turf where labeled. Additionally, its low application rate makes each container highly economical. Accurate calibration improves both safety and effectiveness. Overall, it is a dependable selective herbicide for persistent infestations.
Pros
- Selective
- Systemic
- Low rate
- Professional
- Reliable
- Economical
- Broad control
Cons
- Mixing required
- Slow action
- Premium cost
7. Revolver Herbicide – Best post-emergent herbicide for Dallisgrass in Bermuda grass
Revolver Herbicide is the best post-emergent herbicide for Dallisgrass in Bermuda grass because it is specifically developed for controlling troublesome grassy weeds in established Bermuda turf. After foliar absorption, the active ingredient moves into growing tissues where it suppresses new development. Consequently, Dallisgrass becomes progressively weaker following treatment. This selective action helps preserve desirable turf while targeting invasive grasses.
- Postemergence control of cool-season grasses in warm-season turf
- Goosegrass control and dallisgrass suppression, Different mode of action for resistance management
The active ingredient, foramsulfuron, inhibits the ALS enzyme responsible for producing essential branched-chain amino acids. Without these amino acids, cell division slows dramatically and new leaves fail to develop properly. Therefore, root systems gradually lose their ability to support vigorous regrowth. Sequential applications often improve overall control of mature clumps.
Revolver Herbicide is widely used on golf courses, athletic fields, and commercial landscapes because of its excellent turf selectivity. Furthermore, it controls several additional grassy weeds commonly found in Bermuda lawns. Following label directions maximizes turf safety. Overall, it is one of the industry’s leading professional herbicides.
Pros
- Bermuda safe
- Selective
- Systemic
- Professional
- Reliable
- Broad control
- Effective
Cons
- Premium price
- Multiple treatments
- Mixing required
8. Fusilade II Herbicide – Best grass-selective herbicide for Dallisgrass spot treatments
Fusilade II Herbicide is the best grass-selective herbicide for Dallisgrass spot treatments because it controls many grassy weeds growing in ornamental landscapes and certain labeled situations. The active ingredient is absorbed rapidly through foliage before moving into actively growing shoots and roots. Consequently, susceptible grasses gradually stop developing after treatment. This systemic movement improves root suppression.
- BROAD-SPECTRUM WEED ACTION: Fusilade herbicide weed killer targets perennial and annual grass weeds in various settings. Safe for landscapes, nurseries, and sports fields, it controls weeds without harming ornamentals, ensuring a clean appearance
- POTENT INGREDIENTS, SUPERIOR RESULTS: Featuring 24.5% Fluazifop-P-butyl, this herbicide concentrate delivers targeted control of grass weeds. The 75.5% of other ingredients ensure coverage and performance in diverse turf and ornamental settings
The active ingredient, fluazifop-P-butyl, inhibits the ACCase enzyme, preventing fatty acid synthesis required for healthy cell membrane development. As new cell membranes fail to form, actively growing tissues gradually die. Therefore, susceptible grassy weeds lose their ability to regenerate successfully. Proper application timing improves absorption and long-term control.
Fusilade II is commonly used around ornamental beds, nurseries, and landscape plantings where labeled. Additionally, it provides dependable performance against many annual and perennial grassy weeds. Careful application prevents unnecessary injury to desirable vegetation. Overall, it is an excellent specialty herbicide.
Pros
- Grass selective
- Systemic
- Root action
- Reliable
- Landscape use
- Professional
- Effective
Cons
- Limited labels
- Mixing required
- Repeat treatments
9. Glyphosate 41% Concentrate – Best economical weed killer for Dallisgrass
Glyphosate 41% Concentrate is the best economical weed killer for Dallisgrass because it provides dependable systemic control at an affordable cost for non-selective applications. Once absorbed through healthy foliage, glyphosate moves throughout the plant until it reaches underground roots and crowns. Consequently, mature Dallisgrass clumps receive complete internal treatment. This root-level movement significantly reduces regrowth.
- Rainproof in 2 hours
- Visible results in as little as 2 to 4 days
Glyphosate inhibits the EPSP enzyme within the shikimate pathway, preventing weeds from producing aromatic amino acids required for protein synthesis. As protein production declines, root systems gradually lose their ability to produce new shoots. Therefore, the entire plant slowly dies from the roots upward. Thorough foliage coverage improves herbicide translocation.
This concentrate performs well along fence lines, sidewalks, gravel areas, and renovation sites where total vegetation control is acceptable. Furthermore, the economical formulation treats extensive areas at a relatively low cost. Careful spot treatments help protect surrounding turf. Overall, it is an outstanding value for complete vegetation control.
Pros
- Affordable
- Root kill
- Systemic
- Broad spectrum
- Concentrated
- Reliable
- Large coverage
Cons
- Non-selective
- Mixing required
- Slow symptoms
10. Blindside Herbicide – Best combination herbicide for Dallisgrass management
Blindside Herbicide is the best combination herbicide for Dallisgrass management because it combines two active ingredients that broaden weed control in managed warm-season turf. The formulation attacks susceptible weeds through multiple biochemical pathways after foliar absorption. Consequently, difficult weed infestations become easier to manage within an integrated weed control program. Multiple modes of action also support resistance management.
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The active ingredients, sulfentrazone and metsulfuron-methyl, disrupt both enzyme activity and normal cellular development inside susceptible weeds. Sulfentrazone rapidly damages plant cells, while metsulfuron inhibits amino acid production required for continued growth. Therefore, susceptible weeds gradually decline following treatment. This complementary chemistry broadens the overall weed control spectrum.
Blindside is commonly used by professional lawn managers maintaining golf courses, commercial landscapes, and residential properties. Additionally, it controls numerous broadleaf weeds and sedges alongside selected grassy weeds where labeled. Careful application improves overall turf safety. Overall, it is a valuable component of comprehensive turf weed management.
Pros
- Dual action
- Broad spectrum
- Professional
- Reliable
- Selective
- Systemic
- Effective
Cons
- Premium price
- Mixing required
- Label specific
Buying Guide: How to Choose the Best Weed Killer for Dallisgrass
Identify Your Turfgrass
Dallisgrass growing in Bermuda grass may require different herbicides than infestations in Zoysia, St. Augustine, or centipede lawns. Always verify turf tolerance before applying any product.
Selective vs. Non-Selective Herbicides
Selective herbicides control Dallisgrass while preserving desirable turfgrass. Non-selective herbicides containing glyphosate eliminate all vegetation and are best reserved for spot treatments or lawn renovation.
Systemic Herbicides Provide Better Root Control
Systemic herbicides move into underground crowns and roots where Dallisgrass stores energy. This internal movement provides more dependable long-term control than contact herbicides.
Understand the Active Ingredient
ALS inhibitors, HPPD inhibitors, ACCase inhibitors, and glyphosate each work differently against grassy weeds. Rotating herbicide groups also helps reduce resistance development.
Timing Matters
Treat Dallisgrass while it is actively growing and before seed heads fully mature. Healthy foliage absorbs systemic herbicides more effectively.
Sequential Applications
Mature Dallisgrass often requires more than one application because underground crowns contain stored carbohydrates that support regrowth.
Promote Healthy Turf
Dense, healthy turf naturally competes with Dallisgrass for sunlight, moisture, and nutrients. Proper mowing, fertilization, irrigation, and overseeding reduce future infestations.
Best Weed Killer For Dallisgrass FAQs
1. What is the best weed killer for Dallisgrass?
Selective herbicides such as Celsius WG, Tribute Total, and Certainty Turf Herbicide are among the most effective options for labeled warm-season turf, while glyphosate products work well for spot treatments in non-turf areas.
2. Why is Dallisgrass difficult to kill?
Dallisgrass is a perennial weed with deep roots and persistent crowns that store energy, allowing the plant to regrow after mowing or incomplete herbicide treatments.
3. Is glyphosate effective on Dallisgrass?
Yes. Glyphosate provides excellent systemic control in areas where complete vegetation removal is acceptable because it kills both the foliage and underground roots.
4. How many applications are needed?
Large, mature Dallisgrass clumps often require sequential applications to completely exhaust underground carbohydrate reserves.
5. Can Dallisgrass spread by seed?
Yes. Mature plants produce abundant seed, allowing infestations to spread quickly if seed heads are not controlled.
6. Does mowing control Dallisgrass?
Regular mowing helps reduce seed production but does not eliminate established plants because underground crowns remain alive.
7. How can I prevent Dallisgrass from returning?
Maintaining dense, healthy turf through proper mowing, irrigation, fertilization, and timely herbicide applications provides the best long-term prevention.
Conclusion
In conclusion, choosing the best weed killer for Dallisgrass begins with selecting a herbicide that matches both your turfgrass species and the severity of the infestation. Celsius WG Herbicide earns our best overall recommendation because it provides dependable selective control of difficult weeds while maintaining excellent compatibility with many warm-season turfgrasses when used according to the label.
Tribute Total Herbicide is our runner-up thanks to its professional-grade systemic performance and outstanding suppression of mature Dallisgrass in managed turf. It is an excellent option for homeowners and turf professionals seeking long-term control of persistent grassy weeds.
Combining systemic herbicides with proper mowing, irrigation, fertilization, and sequential applications significantly improves long-term Dallisgrass management. Regular monitoring also helps eliminate new infestations before they become established.
Whether you are treating a home lawn, golf course, sports field, or landscape, selecting the right herbicide and following label directions will provide the best opportunity for successful Dallisgrass control. Compare the products in this guide, choose the solution that best fits your lawn, and enjoy healthier, cleaner, and more attractive turf throughout the growing season.