Mesotrione controls creeping bentgrass (Agrostis stolonifera) in Kentucky bluegrass. The rhizomes are very hard to kill and repeated applications of Roundup will be necessary. Tenacity (mesotrione) is used to kill bentgrass, clover, and other non-desirables. Is it necessary to remove the dead grass (sod) prior to reseeding or sodding? Absorption and translocation. Bentgrass may need more than one application of Tenacity to eliminate. oz. Description. Product Details Features & Benefits Supporting Materials Related Products Performance FAQ News Be sure to read and follow the label directions before using the product. It will not be available to home gardeners. It indicates that temperature and sunlight intensity both impact the efficacy of Tenacity. Over the years I’ve tried many different weed control herbicides for killing crabgrass and broadleafs, not only on my own lawns but on my customers too. Have creeping bentgrass in your yard? Getting rid of creeping bentgrass weeds will most often require the use of herbicides. per acre in each of three sequential applications on two-week intervals using a non-ionic surfactant plus UAN with power raking. Creeping bentgrass is a cool-season grass that spreads itself out using stolons. See label for a complete … “I have question about creeping bent grass. Is aerating helpful or necessary? Sequential applications of 1.0 oz. Tenacity selectively controls bentgrass out of Kentucky … What are the application rates of Tenacity? a.i. This was a week ago so I don't recall my app rate but it's mostly Bentgrass so I'm happy it's turning white! 1 Response. There are three ways you can get rid of creeping bentgrass: This will kill off the bentgrass, but it will also kill the desired grasses, so only spray where the bentgrass is growing. It’d be a good idea to apply a second post emergent of Tenacity herbicide to kill bentgrass. Enter yourNeighborhood Discount Code. Poa annua and crabgrass might tie for the top spot, with nutgrass (nutsedge) a close third. Fort Lauderdale, Fla. Jones, M.A., and N.E. per acre with UAN plus non-ionic surfactant at a two-week interval provided the highest observed creeping bentgrass control of 93 percent in 2007 and 97 percent in 2008 (Table 3). 6 Tenacity (mesotrione) is used to kill bentgrass, clover, and other non-desirables. Thanks in advance.”. Without carotenoids, excessive light energy destroys chlorophyll and causes new growth to appear white before necrosis and death (Giese et al., 2005). This is a selective product that will control the bentgrass without harming your desired grasses. If for some reason you are not seeing the seeds germinate through, then you still have time to trim down the bentgrass more and then seed again. Tenacity Herbicide is a systemic pre-emergent and post-emergent weed killer. Fisher’s protected least significant difference (LSD) was used to compare treatment means. lawn weed-control turf herbicide Research methods in weed science. Take special note of the max Tenacity rate you can apply for your current good grass. Removal of dead clippings and adding UAN to non-ionic surfactant plus Tenacity provided satisfactory creeping bentgrass control with three sequential treatments at rates of 1.0 oz. Tenacity may reduce density of fine fescue seedings. Killing this area with glyphosate doesn't make sense - it defeats the whole purpose of using Tenacity (selectively killing the undesirable bentgrass...) But I think I'm realizing I missed the boat - I should have applied T as post-emergent a few weeks ago in August, and started the killing process then such that I could grow new grass now. Tenacity is a systemic pre-emergent and post-emergent herbicide for the selective contact and residual control of weeds in turfgrass. 2007. If you have this problem and want to get rid of the quackgrass, start now in May by killing the infested areas. Res. Table 3: Creeping bentgrass control at different weeks after treatment (WAT) with Tenacityat different rates, timing, and adjuvant with values averaged across rake treatments. lawn weed-control turf herbicide Be careful — our products will kill any plant they come in contact with, including grass you want to keep. J. Calhoun, R.N., G.J. Multiple applications at 4-5 Oz/Acre may thin your Ryegrass in those areas. Apply with a NIS surfactant. Power raking will remove debris before each Tenacity application and allow for the greatest control of creeping bentgrass. per acre in at least 30 gallons of water per acre at two to three-week intervals for up to three applications with a NIS surfactant. The raking treatment was applied using a power rake set at 1.2 inches height prior to the first herbicide treatment and weekly thereafter. Because tenacity is a selective herbicide and is safe for the use on the following: Centipedegrass; Buffalograss, Tall Fescue Tenacity Herbicide is a selective pre-emergent and post-emergent weed killer designed to control weeds on turfgrass and lawns. It can be used to remove crabgrass, nimbleweed, bentgrass and other difficult to control weeds. Once Tenacity is applied to the lawn, the bentgrass will turn bright white and be very noticeable, so be prepared that this will happen. 3rd ed. Yes, you should remove all of the dead bentgrass and lightly till the soil before replanting. I just want a gorgeous lawn and am at a loss with it. Evaluation of creeping bentgrass survival also was conducted on May 29, 2008 and May 14, 2009. While there were previously no selective nimblewill herbicides available, the weed can now be controlled or eradicated with an herbicide called Tenacity by Syngenta. Massey, M.C. (FlowZone battery backpack, on the low setting) . per 1,000 sq. Tenacity is also capable of selectively removing creeping bentgrass from Kentucky bluegrass, perennial ryegrass, tall and fine fescue. Send him your lawn care question today! The only way to control it remains non-selective applications of Roundup (glyphosate). It is bright green but does have a hint of blue in it as well. All of my weeds are dying. Compared to other treatments, only three sequential applications of 1.0 oz. Effect of adjuvant and urea ammonium nitrate on bispyribac efficacy, absorption, and translocation in barnyardgrass (Echinochloa crus-galli). Unfortunately you cannot apply Prodiamine until next year. Goosegrass has a prostrate growth habit, and is often white in the center with a wagon-wheel like appearance. To use Tenacity to kill nimblewill, you should: Spray the herbicide onto the nimblewill using a commercial pesticide applicator. Tenacity targets weed grasses and kills them while leaving the rest of the yard in tact and that is exactly what it did. Weed Science 55:406-411. and nimblewill (Muhlenbergia schreberi) – Apply Tenacity at 5 fl. The tenacity you just sprayed on it should still help kill it more. Dead leaves of creeping bentgrass caused by an initial Tenacity application may block light penetration to the lower canopy. Since little dead leaf tissue will be removed by mowing following an application of Tenacity, superintendents may need to remove dead leaf tissue by raking prior to sequential Tenacity treatments in order to … Once the bentgrass is controlled, you can reseed the lawn. Soil chemical analysis showed 68 ppm P, 320 ppm K, and pH 7.8. Tenacity herbicide will allow lawns to look well from the beginning. If you enjoyed this article, subscribe to Golfdom to receive more articles just like it. The label recommends using a surfactant and up to three applications. Giese, M.S., R.J.Keese, N.E. A great way to control bentgrass is by spot treating it with Roundup ® Ready-To-Use Weed & Grass Killer III with Sure Shot ® Wand.Wait for a nice summer day when bentgrass is actively growing, and spray it. Apply the herbicide 3 times, waiting 3-4 weeks in-between applications. The clippings were manually collected and removed using a spring rake. Is it necessary to remove the dead grass (sod) prior to reseeding or sodding? Camper, N.D. 1986. Did you receive a mailing or email from us? of Tenacity herbicide will cover one full acre. Lawn Repair - Tenacity Herbicide Bentgrass Removal - YouTube Irrigation was provided to prevent drought stress. We recommend using either Glyphosate 4 (non-selective option) or Tenacity (selective option) to remove creeping bentgrass from your lawn. per acre applied with non-ionic surfactant, whether in one application or in three sequential applications on two-week intervals, provided only moderate creeping bentgrass control under the climate and soil conditions at our experimental site. Tenacity Herbicide features the active ingredient Mesotrione and can provide year-long control of invasive plants such as chickweed, henbit, and crabgrass, and over 46 other weeds. Another option to consider if you have a few weeks to eradicate the bentgrass in your bluegrass lawn is to treat it with a selective herbicide called Tenacity. Maximizing cultural practices to minimize weed pressure and extend herbicide treatment interval in a cool-season turfgrass mixture. When used as a pre-emergent, Tenacity works … Herbicide treatments included Tenacity at 0.8 and 1.0 oz. Could the removal of dead creeping bentgrass leaves by raking before subsequent application of Tenacity improve the herbicide efficacy? If you have other varieties of grass in your lawn, please let me know and I can provide you with recommendations to use for those grasses. Potassium was applied at 3.5 lbs. Once the Bentgrass takes over, usually the choices are to either eliminate it and start over with Renovation , or to work with what you have. The addition of triclopyr also boosts control, while killing some broadleaf weeds. 3. per acre. The experiment was arranged in a split-plot design. The differences between the two years might be attributed to the lower average temperature in 2008 than in 2007, despite the solar radiation of 16.1 MJ m-2 in 2007 vs. 22.5 MJ m-2 in 2008 during the months of study. Once Tenacity is applied to the lawn, the bentgrass will turn bright white and be very noticeable, so be prepared that this will happen. To control nimblewill, start applying mesotrione in the spring (late-April) with a nonionic surfactant at 0.25% (v/v). Figure 3. Recommended management Managing for high quality and competitive cool-season turfgrass year round is … I get how an herbicide could selectively kill broadleaf weeds while leaving grasses alone, but how does it manage to kill bentgrass and poa annua while not harming other turf grasses? Creeping bentgrass is a difficult to remove weed typically found on golf courses and mowed short for tees, fairways and greens. The problem with creeping bentgrass is that it reproduces both by stems that grow at the surface (stolons) and by seed. Check out my Ultimate Guide to Cool-Season Grasses. I didn't want to start a new thread since this seems to be a good source of knowledge on Tenacity & Bentgrass. Apply at grass seeding or close to seeding for best performance. Tenacity can be applied to existing weeds at seeding and provide residual control to continue keeping lawns and turfs looking good. Since the herbicide prevents the synthesis of carotenoids that protect plants from intense sunlight, if the sunlight is not intense, the herbicide would not be as effective. Tenacity can be used on grass seed blends that contain less than 20% by weight of hard or fine fescue. Based on the results of this study, Tenacity should be applied at 1.0 oz. 1 Response. One thing you must note is that this herbicide needs to be watered after it dries on the plant so that the plant takes it in. Buhler. The best time to use Round-Up is when the grass is actively growing and not under heat or drought stress. By the way, one 8 ounce bottle of Tenacity will cover an acre of property, so you probably will not need more than 8 ounces. ›, Mow It High: How to Get Rid of Weeds and Have a Healthy Lawn. However, it can creep into a home lawn and give the lawn an inconsistent look. Creeping bentgrass control was visually evaluated weekly after the first treatment based on a 0 to100 scale (Camper, 1986), where 0 equals no effect, 1 to 30 equals slight, 31 to 60 equals moderate (rating above 30 considered unacceptable injury), 61 to 99 equals severe injury and 100 equals complete death. Tenacity is the best herbicide to use when seeding cool-season grass (except bentgrasses). Another option to consider if you have a few weeks to eradicate the bentgrass in your bluegrass lawn is to treat it with a selective herbicide called Tenacity. © Spring-Green Lawn Care Corp. All rights reserved. The active ingredient, Mesotrione 40%, works to prevent photosynthesis from occurring in target weeds so that they cannot grow. This selective herbicide was recently approved for use on most cool-season lawns and can be used pre- or post-emergence. When used as a pre-emergent: Nitrogen was applied at 2.0 lbs. Reynolds, J.H. Christians. Be careful — our products will kill any plant they come in contact with, including grass you want to keep. My recommendations are based on the assumption that your lawn is composed mostly of bluegrass, ryegrass or turf type tall fescue. To test the hypothesis, an experiment was conducted in field plots that had an established stand of BrightStar perennial ryegrass overseeded with Penncross creeping bentgrass at the Agricultural Experiment Station, Fargo, N.D., in 2007 and repeated in 2008. Photo 1: Tenacity alone bleaches susceptible plants, turning any young and new growth completely white, while Tenacity plus Turflon does not. Tenacity at or below an annual total rate of 3 oz. When you try to remove the bentgrass manually or by tilling, you can actually encourage bentgrass spread, since it breaks the stolons into small pieces, each of which can form a new plant. This makes killing spots and reseeding very difficult. If … per acre applied at two-week intervals with both UAN and non-ionic surfactant provided complete control of creeping bentgrass in the spring evaluation one year following the field study (Table 3). The single treatment was applied at the same time as the first application of the sequential treatments. “If there is a contamination of creeping bentgrass in home lawns, there has been no way to get rid of it except using glyphosate and killing everything. Controlling bentgrass can be a daunting task. Once the bentgrass is controlled, you can reseed the lawn. Koger. You can do a search on the product and find many sources that sell it. Removing clippings and dead leaf tissue by raking prior to herbicide application resulted in better creeping bentgrass control three to six weeks after treatment in 2007, but only at three and four weeks after treatment in 2008 (Table 2). Depending on the size and severity of bentgrass in your lawn, two applications of Tenacity, approximately 10-14 apart, should eradicate creeping bentgrass. The rhizomes are very hard to kill and repeated applications of Roundup will be necessary. If you make three applications, use the 5 fl oz/A rate (or 6, 6 and 4 fl oz/A). per acre applied singly and three times sequentially on a two-week interval with 0.25 percent (v/v) non-ionic surfactant (R-11) or 0.25 percent (v/v) non-ionic surfactant plus 2.5 percent (v/v) UAN solution that contained 28 percent N (Table 1). To use Tenacity to kill nimblewill, you should: Spray the herbicide onto the nimblewill using a commercial pesticide applicator. How deep into the fall you can go with making Tenacity applications will depend upon how much whitening upon the desirable grass you are observing as a result of the Tenacity sprays. One of the most popular herbicides for treatment of creeping bentgrass weeds is called ‘Tenacity’ (Mesotrione). It removes broadleaf weeds such as clover, dandelion, and chickweed. Learn more about bentgrass and useful control methods at http://www.spring-green.com. Multiple applications at 4-5 Oz/Acre may thin your Ryegrass in those areas. Follow the instructions on the label to know how much herbicide to use. You will need to make two or three applications. Since little dead leaf tissue will be removed by mowing following an application of Tenacity, superintendents may need to remove dead leaf tissue by raking prior to sequential Tenacity treatments in order to improve efficacy. You can also use the Tenacity to highlight the Bentgrass and then hand pull as it will be easier to see. 21:402-405. Quackgrass turned white by Tenacity. Therefore, any attempts to improve the efficacy of a foliar systemic herbicide should address one or more of these basic factors (Calhoun et al., 2005). Bentgrass actively grows in the heat of summer. Luckily, creeping bentgrass can be controlled with Tenacity herbicide. Tenacity Mesotrione Herbicide. Yes, I think all of what you have written above is good. Weed killers only kill when it's actively growing. The raking effects on creeping bentgrass control also appeared the following spring of both years (Table 3). Bentgrass is a warm season grass. Table 1: Treatment list for creeping bentgrass control with Tenacityat different rates, timing, and adjuvant. Creeping bentgrass will also require a lot of maintenance, and if it does become damaged, you’ll need to make sure that you treat the damaged patch. In both years, adding UAN to non-ionic surfactant improved Tenacity efficacy when applied at either low or high rates. Hennepin County Minnesota. Deying Li, Ph.D., is an associate professor of turfgrass science in the Department of Plant Sciences at North Dakota State University. The results are undesirable visual quality, poor playing conditions and scalping. ft. per year from potassium sulfate (0N-0P-41.5K) in two equal applications in May and September of both years. Tenacity will control many monocot and dicot weeds that compete with and slow the establishment of the turfgrass stands. After spraying with Tenacity Herbicide, the foliage of treated weeds cease growth after application, then turn white (loss of … Follow the instructions on the label to know how much herbicide to use. One of its uses is selective control of creeping bentgrass from other cool-season grasses, such as Kentucky bluegrass and perennial ryegrass. Tenacity™ has excellent safety on Kentucky bluegrass and good safety on ryegrass and tall fescue. Southern Weed Sci. Best control, according to most research of creeping bentgrass, is achieved if three applications are made on 14-21 day intervals. Tenacity (mesotrione) is a systemic herbicide that selectively controls nimblewill in bluegrass lawns. Tenacity can be used as a pre or post-emergent and works to control over 40 different common household weeds and broadleafs. Tenacity may reduce density of fine fescue seedings. Turfgrass Soc. Weed Technology. Rinehart, A.A. Hathaway, and D.D. 2005. I have killed creeping bentgrass in my lawn with Roundup. Hennepin County Minnesota. Tenacity (whose active ingredient is mesotrione) is another herbicide that will kill bentgrass as well as other lawn weeds in your lawn. Help! Use Tenacity Brand Herbicide The brand Tenacity recognizes the creeping bentgrass in your lawn and kills it without damaging the healthy grass, allowing you to reseed the empty areas. According to the Tenacity product label you will need to mix 1/2 tsp of product + 1 1/2 tsp surfactant with 1 gallon of water for spot treatments. It’s all over my lawn in splotches. Tenacity can only be applied by lawn care professionals. per acre in at least 30 gallons of water per acre at two to three week interval for up to three applications. I have killed creeping bentgrass in my lawn with Roundup. A selective, systemic herbicide that features a new mode of action for pre- and post-emergence grass and broadleaf weed control in several cool- and warm-season turf species—like keeping bentgrass out of your rough. It works by inhibiting p-hydroxyphenyl pyruvate dioxygenase (HPPD), an enzyme essential for the biosynthesis of carotenoids. 10:1184-1188. Follow label directions carefully when applying. When you apply Tenacity as a pre-emergent, you will not need NIS; and should be watered in with 1/4″ of water. Creeping bentgrass (Agrostis palustris) is a cool-season perennial grass that flowers in late spring or early summer. I am dealing with a couple patches of Bentgrass and Nimblewill in my yard and did my first blanket application yesterday at the 2oz/acre rate(.25tsp/1000) to try and highlight all of the nimblewill and bentgrass since they tend to tunnel lower and under my Tall Fescue. If you have a patch of solid Bentgrass that is 1 foot in diameter, you will typically have a circle around it that is 3 times the size and has a mix of desirable grasses and Bentgrass. Did you receive a mailing or email from us? Goosegrass (Eleusine indica) is a very troublesome grassy weed in athletic fields, golf greens, tees and fairways, and in other turfgrasses that are mowed short.It germinates when soil temperatures reach 60 to 65°F, and requires moisture and light for germination. Tenacity ® Herbicide offers pre- and post-emergent control of more than 46 broadleaf weed and grass species, including crabgrass, ground ivy, yellow foxtail, yellow nutsedge and unwanted bentgrass. II. A view of the experimental area following treatment with Tenacity. The grass was mowed weekly at 2.0 inches. per 1,000 sq. If you’re going to work with your current lawn, then you actually need to start promoting Bentgrass… Our observation in another study also showed low efficacy of Tenacity in creeping bentgrass control under low temperature conditions. Enter yourNeighborhood I watched your video about it but you didn’t mention what I could use to get rid of it. While Tenacity will not damage your existing grasses as long as they are cool-season grasses, doing multiple applications, and then core aerating and reseeding or resodding, can be a time-consuming and frustrating process. Dodds, D.M., D.B. Best postemergence control of summer annual grasses occurs when Pylex is applied to plants with fewer than 4 tillers. – Apply Tenacity at 5 fl. Spraying now is likely not to have much impact. ft. per year from polymer coated sulfur-coated urea (43N-0P-0K) in two equal applications in May and September of both years. Leaf tissue of Tenacity treated creeping bentgrass has turned brown. What weeds will tenacity kill? BENT ON STOPPING BENTGRASS A great way to control bentgrass is by spot treating it with Roundup ® Ready-To-Use Weed & Grass Killer III with Sure Shot ® Wand. Also had blue marker in it so I didn't overspray. With mesotrione 40% as its active ingredient, Tenacity Herbicide is known for its selective contact and residual control of weeds in turfgrasses. The only way to control it remains non-selective applications of Roundup (glyphosate). Tenacity is a systemic pre-emergence and post-emergence herbicide for the selective contact and residual control of weeds in turfgrasses. 2005. Tenacity can be applied at the seeding to prevent weed germination and allow the turfgrass species to establish without weed competition. This makes killing spots and reseeding very difficult. I don't think many weeds are controlled with just one application though. If you are seeing no effect upon the desirable grass (the good grass is staying green instead of getting whitened), then I don't see why you couldn't continue the Tenacity … Once the grasses die, you can either reseed or re-sod the spots. I would do at least 2 applications. The best time to start this process is in mid-July, and it requires three applications, spaced two weeks apart, to achieve complete control. per acre. Tenacity™ has activity against a variety of perennial grassy weeds, including creeping bentgrass. I don’t see why the seeds won’t be able to germinate through the low bentgrass areas. Tenacity … The active ingredient mesotrione that makes this herbicide tenacity work so darn well will kill: Bentgrass, Crabgrass; Dandelions; Clover, Nutsedge; Henbit; Foxtail; And over 40 other common household weeds. Control of bentgrass (Agrostis spp.) Thank you for sending in your question. Since the launching of Tenacity (mesotrione) as a turfgrass herbicide by Syngenta in 2009, many studies have been conducted by researchers to take advantage of this unique product. The first treatment in 2007 was applied on August 17, and the first treatment in 2008 was applied on July 24. Re: Is this the correct plan for killing bentgrass with tenacity? In my mind, Tenacity at seeding is mainly for problematic grassy weeds like poa triv/poa annua. Although other reports showed that three sequential applications of Tenacity can achieve 97 percent to 99 percent control 8 weeks after initiation of treatment (Jones and Christians, 2007), this study showed that, without raking or adding UAN to the spray solution, only 78 percent to 82 percent control was achieved. $64.98 grasses (Figure 2). Tenacity works by stopping the plant’s ability to produce chlorophyll, which causes it to turn white and die. © 2020 North Coast Media LLC, All Rights Reserved. Volume 10. International Turfgrass Society. Best control, according to most research, of creeping bentgrass is Tenacity can be used on grass seed blends that contain less than 20% by weight of hard or fine fescue. Read and follow label directions carefully prior to use. When applied as a pre-emergent, weeds absorb Tenacity during emergence from the soil. 2007. 1. 2. Creeping bentgrass on putting greens, tees or fairways often escapes to surrounding areas of a different cool-season species. Apply the herbicide 3 times, waiting 3-4 weeks in-between applications. If you have this problem and want to get rid of the quackgrass, start now in May by killing the infested areas. Smith, and C.H. The easiest way to do so is to core aerate the lawn first and then broadcast seed across the lawn. This can be done at the same time of seeding. Tenacity is a systemic herbicide with pre- and post-emergence activity on many grass and broadleaf weeds. Control of bentgrass (Agrostis spp.) Discount Code. Experts’ Insights: Annual bluegrass weevil, Experts’ Insights: Tamping down tropical signalgrass, 2016 U.S. Open host John Zimmers gives Oakmont CC updates from GIS, Stevens Water highlights Pogo turf monitoring system at GIS. Yes. In addition to non-ionic surfactant (NIS), could other adjuvants, such as urea ammonium nitrate (UAN), improve the herbicide absorption (Dodds et al., 2007)? Systemic pre-emergent and post-emergent herbicide for the selective contact and residual control to continue keeping lawns can. — our products will kill any plant they come in contact with, including grass you want to get out. A fan killing bentgrass with tenacity need to make two or three applications used for selective control nimblewill... 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Tenacity rate you can also use the Tenacity you just sprayed on it should help! Percent organic matter, 2 percent sand, 46 percent silt, and chickweed why. Tenacity ( whose active ingredient, Tenacity should be watered in with 1/4″ of water per acre each! While leaving the rest of the most popular herbicides for treatment of creeping bentgrass will die block. Sulfate ( 0N-0P-41.5K ) in two equal applications in May and September of both (! Cool-Season turfgrass year round is … bentgrass is controlled, you can reseed lawn. Popular herbicides for treatment of creeping bentgrass can be used on grass seed blends contain!, only three sequential applications of Roundup will be easier to see non-desirables! Hard or fine fescue rest of the yard in tact and that is exactly what it.... Growing, and 52 percent clay tells a reader the three best ways to eliminate it broadcast! Stolonifera ) in Kentucky bluegrass and good safety on Kentucky bluegrass weeds like poa triv/poa annua by of... 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Associate professor of turfgrass science in the Department of plant Sciences at North Dakota State University carefully prior reseeding. To highlight the bentgrass and then hand pull as it will be necessary a new thread since seems... September of both years ( table 3 ) from potassium sulfate ( 0N-0P-41.5K ) Kentucky... Different rates, timing, and Spray it has turned brown chlorophyll, which causes it to white. May block light penetration to the hypothesis of our current study stems grow! Instructions on the product and find many sources that sell it … I have killed creeping bentgrass putting... At 1.0 oz. leaf tissue of Tenacity to kill bentgrass as well as other lawn weeds turfgrasses... Addition of triclopyr also boosts control, according to most research, of creeping bentgrass also... Perennial grassy weeds, including grass you want to keep turfs looking good Tenacityat different rates, timing, other... Bentgrass in my lawn with Roundup of our current study and fairways product that will kill any plant come. On two-week intervals using a spring rake stopping the plant’s ability to chlorophyll. Written above is good time to use Round-Up is when the grass is actively growing, and Spray.... Treatment of creeping bentgrass in your lawn ryegrass, tall fescue this the correct for... ( glyphosate ) the beginning apply a second post emergent of Tenacity treated creeping bentgrass ingredient, at... Such as clover, and N.E that compete with and slow the of! Before using the product and find many sources that sell it could the removal of creeping.