Hi-Yield Triclopyr Ester Ultra


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5 out of 5 stars Rating: 4.8

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Hi-Yield Triclopyr Ester Ultra bottle (8 oz)

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Hi-Yield Triclopyr Ester Ultra

Use HI-YIELD Triclopyr Ester previously known as Turflon Ester Ultra herbicide for the control of actively growing annual and perennial broadleaf weeds and kikuyugrass in perennial bluegrass, perennial ryegrass, or tall fescue ornamental turf including these turfgrasses in golf courses. It will suppress Bermuda grass.

HI-YIELD Turflon Ester Ultra is formulated as a low volatile ester. However, the combination of spray contact with impervious surfaces, such as roads and rocks, and increasing ambient air temperatures, may result in an increase in the volatility potential for this herbicide, increasing a risk for off-target injury to sensitive crops such as grapes and tomatoes.

Mixing Instructions

Add about one-half the required amount of clean water to the spray tank. Add HI-YIELD Turflon Ester Ultra and complete addition of water with agitation running. Mix thoroughly and continue moderate agitation while spraying. When this product is mixed with water it forms an emulsion, not a solution; separation may occur unless the spray mixture is agitated continuously.

Application Instructions

Broadcast Treatment of Ornamental Turf

Apply foliage sprays during warm weather, early spring through fall, when weeds are actively growing. Apply 1/2 to 1 quart of HI-YIELD Turflon Ester Ultra per acre in enough water to control broadleaf weeds actively growing in perennial bluegrass, perennial ryegrass, or tall fescue. Only emerged weeds present at the time of application will be controlled. Apply using equipment that assures uniform coverage of the target area. When treating mature plants or hard to control species, and for applications made during drought conditions, use the higher rates of HI-YIELD Turflon Ester Ultra Applications made under drought conditions may provide less than desirable results.

Rating Snapshot

5 stars   21
4 stars   5
3 stars   0
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1 star   0

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5 out of 5 stars (26)

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Most Helpful Customer Reviews
  • 19 of 21 people found this review helpful:

    4 of 5 stars  Damned Wild Violets!
    By S. in Delaware, OH on 05/26/2014
    Verified Purchase

    Nothing I have tried previously has worked on these things; Trimec, 2-4D, some others I can't spell :) A few days after application I was weary that this wouldn't work either, but after a week there was noticeable change. Looks like this did the trick!

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  • 11 of 12 people found this review helpful:

    5 of 5 stars  Works Perfectly!
    By Steve in Long Beach, CA on 03/30/2014

    Prior to my purchase of Hi-Yield, I had only bought the "other brand" of Turflon. For the uninitiated, this is the only product safe for killing bermudagrass and several other invasive grasses from your otherwise beautiful lawn. It kills many noxious weeds without destroying a nice Marathon lawn, for instance. The price I paid for this was a bit less expensive than the other brand and worked just fine.

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  • 11 of 12 people found this review helpful:

    5 of 5 stars  Magic on Wild Violets
    By Adrienne in Shelton, CT on 04/25/2017

    I've been fighting with wild violets for about three years, tried a bunch of different products. Sometimes I'd knock them back a bit, and sometimes I'd knock the grass back a bit, but overall it was getting worse each year. This stuff works!! My only disappointment is that the violets were dead within a week; I would rather they had died a slow painful death, screaming for their mommies like little girls :) I used a pump sprayer. In 2 gallons of water I put 3 tbs Hi-Yield and 2 tbs surfactant. I sprayed just until the weeds were wet. I didn't use that blue marking dye but next time I'm going to try it. With so many violets it got hard to keep track of where I sprayed, and I missed some. Between the ones that I missed and the new ones that popped up since I sprayed, I'm going to have to do a second round. But at least now I'm winning the war. Die, you violets, die, die, die!!

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  • 10 of 10 people found this review helpful:

    5 of 5 stars  Oxalis control
    By Howard in Huntington Beach, CA on 02/23/2016

    First product I've found that truly controls oxalis and doesn't harm grass.

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  • 10 of 11 people found this review helpful:

    5 of 5 stars  Gets rid of broadleaf weeds and Bermuda in Fescue turf
    By Mike in Rialto, Ca on 08/18/2015

    Works great on getting rid of broad leaf weeds and Bermuda in Fescue turf. Also kills tree stumps and woody vegetation. Keep away from shrubs trees and vegetation you don't want to kill. Don't spray when it is windy as the pesticide ca be blown off target and kill adjacent shrubs and trees. Also don't spray when temperature s are above 85 degrees. Don't water for 24 hours after application.

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Most Recent Customer Reviews
  • 5 of 5 stars  This stuff just plain works! Wild Violets are gone.
    By Gary in Westerville, OH on 10/27/2017
    Verified Purchase

    I have a very large back yard that was nearly overrun with wild violets. Roughly 60% of my yard was covered with them. I'd tried several things from the local big box stores and nothing worked. I even hired a professional lawn company. After months of no results, I cancelled the lawn service. I found this website, read some of the success stories and decided to try this product. As advised, I mixed with a surfactant and blue dye. It took two treatments over several weeks but I'm happy to report my yard is 100% free of wild violets. There is not a single one left.

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  • 0 of 1 people found this review helpful:

    5 of 5 stars  Triple Threat.....
    By Michael in Waycross, GA on 10/22/2017

    .....indeed..... You must first have the expertise that you can TRUST..!!!..... with the right advice ..... with the right product b/c if you make a bo-bo.... you can not get it back..... like scorching your yard can happen.... These guys/girls..... are really impressive! 1st, 2nd, and 3rd .... the value that they bring.... HAVING A BEAUTIFUL YARD is no automatic... as you know..... There you go yard lovers....!!! good folks....

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  • 4 of 5 stars  So far, so good to control Wild Violets
    By Owen in Timonium, MD on 09/28/2017

    My 1/3 acre suburban lot had been invaded by wild violets. Research showed these are hard to kill, with the best current herbicide being Triclopyr. The instructions made clear that 2 to 3 applications, 10 to 14 days apart, would be required to kill the wild violets. The mixing instructions on the bottle are targeted at large-scale applications (e.g., farming) while I needed only about 1 gallon per treatment to spot-spray the wild violets. Online information from DoMyOwnPestControl recommended 1 tablespoon per gallon of water. I also added 2 tablespoons of Hi-Yield Spreader Sticker (a non-ionic surfactant) to improve adhesion of the Triclopyr to the wild violet leaves. I did not see much change after the first application, which may explain some of the negative reviews here. However, a week after the second application many (not all) of the violets were starting to shrivel or had disappeared. I just applied the 3rd application and am hopeful Triclopyr will, in fact, help me control these pesky weeds. I suspect a 4th application may be needed here and there; 1/2 gallon may be sufficient for that. Impact on my grass has been minimal. Most of it showed no change. A few spots showed browning BUT it is possible those patches were not tall fescue, which is the variety Triclopyr does not harm.

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  • 1 of 1 people found this review helpful:

    5 of 5 stars  Finally something that works
    By Gary in Westerville, OH on 09/05/2017

    Wild Violets, gone! 40% of my back yard was overtaken by wild violets and nothing else I tried seemed to have any effect on them. I used this product in combination with hi-yield spreader sticker surfactant, and mark-it-blue. Within a few days the wild violets started dying off.

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  • 5 of 5 stars  Great
    By Roger in Rbk4now6@aol.com on 08/21/2017

    I spent over $200 the past two years to get rid of clover in my lawn and didn't work. Purchases hi yield triclopyr ester ultra for less then $20.00. Used one application and all clover is gone. Great product but use as directed.

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  • 5 of 6 people found this review helpful:

    5 of 5 stars  So thankful for Triclopyr Ester
    By Mike in York, PA on 07/02/2017

    Over the last 3-4 years I've watched wild violets creep into my lawn from my neighbors. They were beginning to completely cover the lawn in spots. I'd NEVER experienced them before despite moving 5 times across the northern US from Washington state to Massachusetts. I'd tried standard broadleaf killers to no avail. The first online search I'd done to find what is effective against them, I read the generic version of RoundUp. I was devastated. I'd put in new lawns at other homes of ours and did not want to do that again. I contemplated paying my grandchildren a nickel a leaf to take a RoundUp-soaked QTip and 'paint' each wild violet leaf one at a time. Then I decided to do a second search and came across Tricyclopyr Ester. I added 0.8 oz of TE to a gallon of water in my pump sprayer, followed by 1.8 tsp of surfactant (ProSolutions nonionic surfactant). In two days the wild vioIet leaves were turning brown. In four days they were almost completely brown and withered. In two weeks I saw no sight of them. It was phenomenal. This combination killed off some variations of clover (others were unphased), and other weeds I don't know the names of. I am ecstatic! This stuff works!!

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  • 2 of 2 people found this review helpful:

    5 of 5 stars  Death sentence for wild violets
    By William in KY on 06/20/2017

    Three weeks after application in concert with quinclorac my wild violet infestation is yellowing and withered. I dare believe they are doomed after multiple doses of other so-called "final solutions." Once more in the fall and we'll see if they are gone for good next spring.

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  • 2 of 3 people found this review helpful:

    5 of 5 stars  Use turflon ester, skip ornamic recommendations
    By Chris in Huntington Beach on 10/01/2016

    good product at a good price to control bermuda and other invasive grasses in fescue. Note: I tried ornamic to save some money and because it claimed it would eliminate, but it did too much damage to the fescue and didn't. Turflon controls, but does not eliminate, without damage the fescue grass. One a month for 3 months, then every 3 months for control.

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  • 8 of 9 people found this review helpful:

    5 of 5 stars  Truly a Great Product recommendto me by an ag Lab
    By Justin in West Columbua, SC on 09/08/2016

    Here is the thing it is 1 TBSP per gallon per the supplemental documents, which is 3 TSP = 1 TBSP. Get yourself a medicine measure from an old cough syrup bottle and dedicate it to herbicides (NEVER use it again for medicines or anything else). I used 1.5 (1 and a half) teaspoons and mixed it up in a dedicated sprayer with half a gallon of distilled water (it is free of all contaminants). From there I added 1 teaspoon of non-ionic surfactant for herbicides (because the product I used recommends 2 TSP/ gallon and I mixed up half a gallon.) Lastly, a blue dye that recommends 1oz per gallon. Two tablespoons is an ounce; hence one (1) tablespoon was what I used for half a gallon... In a gallon sprayer I put a nozzle on it that atomizes the spray and pumped to high pressure. Worked great completely curing my lawn of creeping vine Charlie and surges. I have Centipede grass which is a riskyer lawn to use this on per the instructions, but I had no lawn damage whatsoever on my TiffBlair type Centipede warm-season grass in West Columbia, SC. Your results may of course vary from mine which was 100% elimination of the weeds with no lawn damage, but I think most critical is the instructions by the manufacturer realizing that this small bottle is a potent product not forgiving in that you must measure accurately in teaspoons per gallon unlike diluted homeowner products. Alway wear the appropriate PPE and do a test spot to verify you have things dialed in.

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  • 2 of 5 people found this review helpful:

    4 of 5 stars  Tuflon Ester Instructions
    By Dr in Kensington, MD on 08/01/2016

    It's regrettable that the product label is a bit obscure regarding mixing small batches for spot treatment. Instead of describing how much product to add to "enough water to cover 1,000 sq feet." etc., how about a simple statement, e.g., X oz/tbls per gallon of water? Otherwise, time will tell if this really eradicates wild violets since a fair amount of time must elapse between treatments.

    Expert Response   Expert response:
    The instructions can be confusing at first. Please note that each sprayer can have a different output of product and each applicator moves at a different speed which means the manufacturer must keep this in mind when giving directions. With herbicides, water is just a carrier. The actual amount of water is not important. It is only important that you get the specified amount of product over the 1,000 sq ft area to avoid under or over treating. Calibrating your sprayer and application is very important. Please let us know if you have further questions. We are always happy to help!

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Most Helpful Q&A's

08/17/2014 John from Charlotte, Nc

QHow much do I use per gallon?
Hi, I was wondering how much do I use per gallon in a hand sprayer? I'm not very good in math so oz per acre is foreign to me. Thanks!


If you will be applying a foliage spray during warm weather when weeds are actively growing, use 1 Tbsp. of Hi-Yield Turflon Ester per 1 gal. of water to treat 1,000 Sq. Ft. For specific application instructions, please refer to the product label.

48 of 49 people found this answer helpful.
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11/11/2014 Juan

QWill Hi Yield Turflon Ester kill the Bermuda grass and not harm the Fescue?
I have a lawn that is 50/50 Bermuda and Fescue. I want the Bermuda dead!! and When is the ideal time to apply it?


Per the Hi Yield Turflon Ester Product Label: Apply HI-YIELD® Turflon® Ester Ultra at a rate of 1 quart per acre. Three to four additional applications at 4 week intervals will be required to give adequate suppression of Bermudag- rass and allow Fescue or other desired turfgrass species to dominate. To improve suppres- sion and control of Bermudagrass, To improve suppression and control of Bermudagrass, tank mix 1 quart of HI-YIELD® Turflon® Ester Ultra per acre with a postemergence grass herbicide registered for this use pattern. Three to four additional applications of this tank mix at 4 week intervals should be made to achieve control. Reseeding following application will accelerate the transition to Cool Season turf.

This product only control weeds that have already emerged and that are actively growing. If your yard has started going dormant at all and your temps are not above 65 degrees at least 5 days in a row at this point in the year, then you need ot wait until next year to apply the product as you will only see spotty results now. 

9 of 9 people found this answer helpful.
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09/08/2015 Peter from Bergen County, Nj

QWill Hi-Yield Turflon Ester Ultra control wild violets? What is the proper timing to apply?
I understand that the fall is the best time to spray for this plant.


Hi-Yield Turflon Ester Ultra is labeled to eradicate wild violets. Please refer to the product label for complete mixing and application instructions. You will mix 3/8 - 3/4 oz. per 1 gallon of water per 1,000 sq. ft. You can apply this product early spring through fall for the most effective results.

8 of 9 people found this answer helpful.
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02/20/2016 Tim from St. Louis, Mo

QWill Turflon Ester Ultra kill a nearby pin oak tree that has shallow roots?
I have a lawn that is mainly backfill red clay and rock with only about 4 inches or so of top soil. Therefore, the pin oak tree has very shallow roots. How close to this tree (about 12 years old) can I spray Turflon Ester Ultra?


Hi-Yield Turflon Ester Ultra could affect nearby desirable plants if it were to contact them or the root system. We would not recommend applying this product at or near the dripline of any desirable plants.

5 of 6 people found this answer helpful.
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08/03/2014 Ron from Los Angeles,ca

QDoes this Hi-Yield Turflon Ester Ultra control St Augustine grass in tall fescue?
I have a tall fescue sod lawn and St Augustine grass is invading it.

AHi-Yield Turflon Ester Ultra (8 oz.)  per the manufactuer will suppress St. Augustine in Fescue lawn. Meaning, it will not take the St. Augustine all the way out.

4 of 4 people found this answer helpful.
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Most Recent Customer Questions

08/21/2017 Loretta from Pueblo, Co

QDoes Hi-Yield Triclopyr Ester Ultra kill blue grass?
I have tiny ash trees throughout my lawn.


Hi-Yield Triclopyr Ester Ultra††will control†actively growing annual and perennial broadleaf weeds and kikuyugrass in perennial bluegrass, perennial ryegrass, or tall fescue ornamental turf including these turfgrasses in golf courses.

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07/21/2017 Bob from Rogersville, Mo

QWill Hi-Yield Triclopyr Ester Ultra kill Canada thistle?
What is the mixing rate per gallon of water?


Yes, Hi-Yield Triclopyr Ester is labeled for Canada thistle.† You will need to use 3/4 oz. per 1 gallon of water per 1,000 sq. ft.

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07/17/2017 Dale from Bridgman, Mi

QWhat Hi-Yield post-emergence grass herbicide should I use with Triclopyr Ester to improve its effectiveness?
Bermudagrass shoots from my neighbor's weed infested lawn always creep into my yard. What post-emergent herbicide do you recommend I mix with Triclopyr Ester to improve its effectiveness? Red Fescue lawn and Kentucky Bluegrass


Triclopyr Ester is not labeled to control Bermuda grass in red fescue so we cannot recommend it for this use.† It can be used in perennial bluegrass for it though.

Bayer Bermuda Grass Control helps to rid your lawn of Bermuda grass and crab grass without harming your fescue or Kentucky bluegrass. This product does not harm lawns when used as directed and can withstand rain one hour after application. We want to be clear that bermuda can be suppressed, but it is VERY difficult to kill completely. It will take multiple treatments to finally kill it.† It is a ready to use product so should not be mixed with anything.

The other option for you is to spray glyphosate product such as Gly Pho-Sel Pro or Ranger Pro on the bermuda when it is green in early August, wait three weeks to see if any bermuda survives and spray again by early September if needed and then re-seed the spots with fescue in mid-September

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07/12/2017 Todd from Ohio

QCan I use this product to control/kill Trumpet Creeper?
I have been losing a battle against the spread of trumpet creeper (trumpet vine) in my backyard of my house in an urban area. Is this safe to use in an urban area?


WhileHi-Yield Triclopyr Ester Ultra†'s product†label does not specifically list trumpet creeper/vines, it's active ingredient is known to damage ornamental plants such as†Black Medic, Bull Thistle, Clover, Dandelion, Ground Ivy, Kikuyugrass, Plantain, Ragweed, Wild Carrot, Wild Violet,†Black Medic, Bull Thistle, Burdock Canada, Thistle Chicory, Clover, Creeping, Beggarweed, etc. Please refer to label for complete list.

Please refer to the label for complete application directions for broadcast treatment and spot treatments.†

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07/02/2017 George from Guymon, Ok

QAt what rate do I use Hi-Yield Triclopy Ester Ultra to kill Bermuda using a 2 gallon hand sprayer?
What would the mixture be?


Per the†product label†for†Hi-Yield Triclopyr Ester Ultra:†the spot treatment application rate is 3/4 fl. oz. of product per gallon of water. You will likely have to do multiple applications to gain full control of the Bermuda grass. Applications can be done every 3-4 weeks.

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05/29/2017 Lee from Matthews, Nc

QAre there temperature considerations with Hi-Yield Triclopyr Ester Ultra?
As long as K31 is not under drought stress, can this product be sprayes at temps of 90-95?


Hi-Yield Triclopyr Ester Ultra†is best applied in temperatures below 90 to prevent burning of the turfgrass and better effectiveness against the targeted weeds.

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02/21/2017 Alston from Monroe

QCan I mix Hi-Yield Triclopyr Ester Ultra with Ferti-lome?


We would need to know what specific product of Ferti-lome you are wanting to mix together in order to advise if mixing the†Hi-Yield Triclopyr Ester Ultra would be permitted. You may also check the product labels for "tank mixing" instructions on if and how the product is able to to mixed.†

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02/15/2017 Irene

QWhich type of oxalis does Hi-Yield Triclopyr Ester Ultra kill?
Oxalis pes-caprae is taking over my property. That's the one with the little bulbs - i.e., Bermuda Buttercup. Will this product kill the little bulbs too?


Hi-Yield Triclopyr Ester Ultra is labeled to kill Oxalis in general. Since the product has an active ingredient of Triclopyr 60.45%, it will kill the bulb/roots of the Oxalis plant. Coverage of the weed with the spray is critical with this active ingredient, make sure that you follow the application rate on the label and you may need to add 1 once of Agrifact Pro 80/20 Surfactant per gallon of mixture.

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10/04/2016 Diane from Chester, Va

QCan you recommend a product to apply to my lawn to kill wire grass grass in tall fescue?
How often would I apply the product and what is the best time to apply?


Wiregrass is a form of bermudagrass, so to start we want to be clear that Bermuda can be suppressed but it is VERY difficult to kill completely.† It will take multiple applications to kill completely but Fusilade is normally the go-to product for this issue, though it states on the label it is not for residential lawns.† Other options are Turflon Ester or Acclaim†which do not list this restriction on the labels.† The best time to apply any product would be in the Spring as the Bermuda is just starting to green up;†Fall applications would have limited or no result since the grass†is going into dormancy.

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08/21/2016 Eddie from Plainview, Tx

QWill Hi-Yield Turflon Ester Ultra kill cottonwood trees?
We have small Cottonwood trees coming up in our yard. neighbors cut down live cottonwood.


No, Hi Yield Turflon Ester Ultra is not labeled specifically to eliminate cottonwood trees.

We would recommend using Monterey Brush and Vine Control for cottonwood trees. It is recommended that you use a surfactant with the product so that it coats the plant better and eliminates them.

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