4.5 out of 5 stars 8 Reviews | 32 Q&A


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Average Rating

4.5 out of 5 stars Rating: 4.4

8 Reviews | 32 Q&A

Product Overview

Weedmaster is a post-emergent, selective herbicide that suppresses many different types of broadleaf weeds and brush. From chickweed to pigweed, this product controls more than seventy different weeds that would otherwise thrive in grass forages and crop rows. Using dicamba, Weedmaster retards the growth of the weeds, leading them to their death. Mix Weedmaster with the desired amount of water and spray it over the infested area. The application of surfactants, crop oil concentrates and low levels of liquid fertilizers can be mixed with Weedmaster to improve the control of post-emergent weeds.

Note: Due to New California State restrictions, this Can Not be Sold in California.

Features and Specs

Active Ingredient 2,4-D, dimethylamine salt 35.7%, Dicamba 12.4%
Target pests Chickweed, Flixweed, Henbit, Knotweed, Morningglory, Pigweed, Purslane, Ragweed, Sedge, Sunflower, Thistle, Dandelion, Poison Ivy, Nightshade, Redvine, Smartweed, Sowthistle, Leafy Spurge, Thistle
* See label for complete list
For use in Grass Forage, Conservation Reserve Program Land, Rangeland, General Farmland, Fallow Land and Crop Rows
Application 0.5 - 6 pints per 5 - 40 gallons of water per acre of application
* Use a Surfactant to Increase Effectiveness
* See label for complete application instructions
Pet safe Yes, if used as directed on label
Formulation Professional Product
TX, VT (Restricted To Licensed Applicators Only)
Shipping Weight 25.25 lbs
Manufacturer Nufarm
UPC 191662012248
EPA Registration 71368-34


Weedmaster Target Pests

Spotted beebalm, broomweed, wild buckwheat, buffalobur, burdock, buttercup, common chickweed, cow cockle, common cocklebur, plains coreopsis, wolly croton, devils-claw, dogfennel, evening primrose, flax, annual fleabane, flixweed, henbit, knotweed, kochia, common lambsquarters, common mallow, marestail, morningglory, mustard, pennycress, virginia pepperweed, pigweed, poorjoe, common purslane, ragweed, lanceleaf western, sedge, sheperdspurse, pennsylvania smartweed, bitter sneezeweed, sowthistle, sunflower, russian thistle, velvetleaf, field bindweed, bittercress, buckeye, bullnettle, chicory, bur clover, common dandelion, southern dewberry, curly dock, elderberry, Missouri goldenrod, Common goldenweed, Texas groundsel, hairy honeysuckle, Carolina horsenettle, poison ivy, knapweed, marshelder, mesquite, milkweed antelopehorn, nightshade, eastern persimmon, prickly lettuce, rabbitbrush, tansy ragwort, redvine, fringed sagebrush, smartweed, red sorrel, sowthistle, leafy spurge, chinese tallow tree, thistle, hairy vetch, yankeeweed, yellow starthistle.

Types of Weedmaster Application

Keep Weedmaster away from open water and avoid applying the product to areas that treated water might run into the water table. You can apply Weedmaster through ground application, banded and broadcast, spot treatment, and aerial applications.

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  • 4 of 5 Stars

    Horse Pasture Use

    By Natalie on 06/28/2016

    I bought this product after long and extensive research regarding what broad lead herbicide I could safely put down on my active pasture. Two components of this product I really like is that you do not have to pull horses off unless you have broodmares about to or with foal. The second item is that manure and/or compost from horses grazing on treated pasture can be used for flower or vegetable gardens without residual damage. Alsike clover was my target with this application. It took a while to be affected. Broadleaf weeds, like plantain, were the first to take the hit. I'm happy with this product so far and will see how my pastures look come next summer.

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    24 of 27 people found this review helpful

  • 5 of 5 Stars


    By Ken on 09/28/2016

    Fast delivery and product works very well.

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    6 of 8 people found this review helpful

  • 5 of 5 Stars


    By Dianna on 06/01/2018

    I've been doing business with DMO for quite a while and have never been unhappy. Products are always in stock, prices competitive, Shipments / delivery as stated.

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    5 of 6 people found this review helpful

  • 2 of 5 Stars

    Milkweed control

    By Larry on 07/22/2018

    I bought Weedmaster to specifically kill off a two acre pasture of milkweed, as well as other weeds. I sprayed the entire pasture - after about 10 days I mowed the field. After another 10 days we finally got a good rain, and overnight the milkweed are already several inches taller than the surrounding grasses. Too early to tell how the Weedmaster did on the other weeds.

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    5 of 9 people found this review helpful

  • 5 of 5 Stars


    By Lee on 08/14/2020

    I ordered Weedmaster from Do My Own on a Friday morning, the process on their website was straight forward and user friendly. My credit card transaction went thru without issues and my order was on its way. Two days later my order arrived at my door, the whole time I was using the Fed-Ex tracking number and times to keep up with my delivery. The complete process was simple, easy and pain free. Do My Own is a very professional company to do business with and I would recommend them to anyone in need of quick professional agricultural chemicals and supplies. I have applied Weedmaster to my horse and cow pasture and was very pleased with the results. Globe Sage is the nuisance weed my area and with one application of Weedmaster I noticed positive results in less than a week. I would recommend this product to eradicate Globe Sage weeds and also to control broad leaf weeds which are more of a seasonal problem.

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    1 of 1 people found this review helpful

See all 8 customer reviews

Questions & Answers

Have a question about this product?
How hot can it be before you need to stop spraying Weedmaster?

Weedmaster should be applied when temperatures are between 65-85 degrees.  

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104 of 105 people found this answer helpful

Following application of Weedmaster, how long until it is rain safe?

Irrigation or rainfall within 4 hours of post emergence application of Weedmaster may reduce the effectiveness of the product.

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103 of 111 people found this answer helpful

What is the re-entry period for people and dogs in an outdoor area after using Weedmaster?

As long as you keep pets/children out of the area while you treat and until the product has had time to completely dry or settle it is safe for pets and people to return and resume normal activity

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98 of 104 people found this answer helpful

How long does it take for weedmaster to dry or settle after application?

Weedmaster will dry within about 4 hours after application. Safe for children and pets after dried. 

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70 of 74 people found this answer helpful

How long do horses need to be off a pasture after it’s been sprayed with WeedMaster?

According to the product label, people and animals may return to treated areas once the Weedmaster has had time to completely dry.

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61 of 63 people found this answer helpful

See all 32 customer questions

Weedmaster 4.5 out of 5 stars Rating: 4.4 (8 Reviews / 32 Q&A)

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