Lontrel Turf and Ornamental Herbicide

4 out of 5 stars 4 Reviews | 23 Q&A

Lontrel Turf and Ornamental Herbicide

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Average Rating

4 out of 5 stars Rating: 4

4 Reviews | 23 Q&A

Product Overview

Lontrel Turf and Ornamental is a selective post-emergent herbicide that controls certain broad-leaf weeds in turf and certain ornamental plantings, such as conifers and non-leguminous woody species, in landscapes and nurseries. Lontrel can be used on warm-season and cool-season turf grasses.

Features and Specs

Active Ingredient Clopyralid 40.9%
Target pests Black medic, Bull Thistle, Clover, Dandelion, Daisy, Groundsel, Horseweed, Kudzu, Nightshade, Plantain, Ragweed, Thistles, Wild buckwheat and others
* See label for complete list
For use in Commercial Cool & Warm-Season Turf: Sod Farms and Golf Courses
Commercial Ornamentals: Ornamental Plantings, Conifers in Landscapes and Nurseries
* Do not use on Residential Turf-grass

* See label for complete list
Application 1/10 - 1/2 oz. per 1,000 sq. ft.
1/4 - 1 1/3 pints per acre
* Use a Surfactant to Increase Effectiveness
* See label for complete application instructions
Formulation Professional Product
NOT FOR SALE TO NY (Restricted To Licensed Applicators Only)
Shipping Weight 2.71 lbs
Manufacturer Dow AgroSciences
UPC 706927858099
EPA Registration 62719-305


Application Timing

Apply to actively growing weeds. Extreme growing conditions such as drought or near freezing temperatures prior to, at, or following application may reduce weed control and increase the risk of crop injury at all stages of growth. Only weeds that have emerged at the time of application will be affected. Wet foliage at the time of application may decrease control. Applications of Lontrel Turf and Ornamental are rainfast within 2 hours after application.

Use of Adjuvants

Addition of surfactants, crop oils, or other adjuvants is not usually necessary when using this product. Adding a surfactant to the spray mixture may increase effectiveness on weeds but may reduce selectivity to the crop, particularly under conditions of plant stress. If an adjuvant is added to the spray solution, follow all manufacturer use guidelines.

Spray Coverage

Use sufficient spray volume to provide thorough coverage and a uniform spray pattern. For best results and to minimize spray drift, apply in a spray volume of 20 gallons or more per acre. As vegetative canopy and weed density increase, spray volume should be increased to obtain equivalent weed control. Use only nozzle types and spray equipment designed for herbicide application. To reduce spray drift, follow precautions under Avoiding Injury to Non-Target Plants.

Cool-Season Grasses:

Bentgrass (including Bentgrass Fairways), Kentucky Bluegrass, Fescue (Chewing), Fescue (Creeping Red), Fescue (Sheeps), Tall Fescue, Ryegrass, (Perennial)

Warm-Season Grasses:

Bahiagrass, Bermudagrass (including bermudagrass fairways), Buffalograss, Centipedegrass, Fescue, Tall (growing in Warm-Season areas), Kikuyugrass, Seashore Paspalum, Zoysiagrass, and St. Augustinegrass

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  • 5 of 5 Stars

    the best stuff out there

    By Steve on 04/19/2013

    mix 1/2 ounce per gallon of water to cover 1000sqft add 1 ounce of spreader sticker per gallon of water for better results add three drop of octane to speed up the process add 1 ounce of basagran for sedges spray 2 wks later for tougher weeds {dollarweed}

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    8 of 8 people found this review helpful

  • 5 of 5 Stars


    By Richard on 10/06/2016

    Great on thistles. Use in ground cover to control some weeds without killing the ground cover

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    6 of 6 people found this review helpful

  • 1 of 5 Stars

    Lontrel Turf and Ornamental Herbicide

    By Dennis on 12/09/2011

    Atrazine is cheaper and works better. Treated 1/2 acre of St. Augustine with 1 oz. per 1,000 feet and got little to no dollarweed control after 10 days.

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    4 of 8 people found this review helpful

  • 5 of 5 Stars

    Russian thistle

    By Joe on 02/22/2019

    This is only product I’ve found to erradicate this infestation

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    1 of 1 people found this review helpful

See all 4 customer reviews

Questions & Answers

Have a question about this product?
What can I use to kill Dichondra in a St Augustine/Bermuda lawn?

Will it also kill the grasses?


To remove Dichondra from St. Augustine/Bermuda grass, you should use Lontrel.  Lontrel is a selective herbicide that will not harm your grass, but will kill other weeds like Dichondra.

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28 of 33 people found this answer helpful

How to get rid of Vetch in flower beds?

what should i use to get rid of crown vetch in my flower beds. It has deep long tendrel roots like carrots . Other than tearing up and starting over what should I use?? should I use ERASER?

You can use a round up type product like eraser as a spot treatment, but if you want to get rid of the Vetch selectively you can use Lontrel.  You can apply Lontrel over your flowers and it will only kill the grassy weeds, like vetch.

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24 of 30 people found this answer helpful

How much Lontrel do you use per gallon of water in hand held sprayer?
The first thing you need to know when using an herbicide such as Lontrel Herbicide is that the exact amount of water you dilute it with is not important. It is only important to make sure you are using the correct amount of product per 1,000 sq ft of lawn. Use too much and you risk damaging your lawn, use too little and you will not get adequate results. You did not indicate what type of weeds you are treating or what type of turf the weeds are growing in. You can find the application rates per 1,000 sq ft located on pages 4-5 of the Lontrel product label. To decide how much water you want to use, you should mark a 1,000 sq ft area, fill your sprayer with water ONLY, and start walking and spraying just as if you were doing the actual application of herbicide. When you are done walking and spraying the 1,000 sq ft area note how much water it took you to spray that area. That is the amount you will want to mix the specified amount of product with for each 1,000 sq ft area that needs to be treated.

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20 of 140 people found this answer helpful

What is the best product(s) recommendations to completely eliminate thistle?

I am battling an invasion of thistle trying to take over the entire yard. I believe it is too late this year in Colorado for pre emergents as I see small thistle plants actively sprouting throughout the grass and rockbeds. The product needs to be safe for children and pets within a few hours after application.

You can use Lontrel to treat grassy weeds like Thistle. Lontrel is a pre-emergent that works great in treating thistle. Please read the product label to make sure you can apply this product your lawn.

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7 of 10 people found this answer helpful

Will Lontrel (clopyradil) harm my liriope spicata?

I have crown vetch in my liriope spicata and need to chemically eradicate it.


Lontrel is not recommended for Residential use. There is such a high percentage of Clopyralid that it will not only kill the Crown Vetch, but everything else too, including Liriope Spicata. AmTide MSM 60 DF or  Blindside would be some options for you to use.

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3 of 5 people found this answer helpful

See all 23 customer questions

Lontrel Turf and Ornamental Herbicide 4 out of 5 stars Rating: 4 (4 Reviews / 23 Q&A)

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