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Casoron 4G Herbicide
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Average Rating

5 out of 5 stars Rating: 4.9

12 Reviews | 140 Q&A

Product Overview

Casoron 4G is a selective pre-emergence herbicide that prevents many variety of weeds and grasses. Casoron 4G controls weeds before they emerge from the ground, by forming an herbicidal vapor barrier in the upper layer of the soil when activated by rainfall or irrigation water. Casoron 4G should be applied before weed seed germination and emergence from the soil (usually from mid-winter to early spring). A single application will usually provide season-long weed control.

Features and Specs

Active Ingredient Dichlobenil 4%
Target pests Perennial Artemisia, Canada Thistle, Curly Dock, Falsedandelion (Catsear), Fescue, Leafy Spurge, Orchardgrass, Quackgrass, Russian Knap weed, Smooth Brome, Timothy, Wild Artichoke, Wild Aster, Wild Carrot, Yellow Rocket

Annual bluegrass (poa annua), Bluegrass, Bull Thistle, Camphorweed, Carpetweed, Chickweed, Citron Melon, Coffeeweed, Crabgrass, Cudweed, Dandelion, Dogfennel, Evening Primrose, Fiddleneck, Florida Purslane, Foxtail, Gisekia, Groundsel, Henbit, Jerusalemoak, Goosefoot, Knotweed, Lambsquarter, Maypops, Milkweed Vine, Miners Lettuce, Natalgrass, Old Witchgrass, Peppergrass, Pineapple Weed, Plantain, Purslane, Ragweed, Red Deadnettle, Redroot Pigweed, Rosarypea, Russian Thistle, Shepherdspurse, Smartweed, Spanishneedles, Spurge, Teaweed, Texas Panicum (Hurrah grass), Wild Barley, Wild Mustard, Wild Radish, Yellow Woodsorrel
For use in Fruit, Nut Orchards, Nurseries, Woody Ornamentals, Hybrid Cottonwood, Poplar Plantations, Commercial Buildings, Fences, Industrial areas and Recreational areas
* See label for complete list
Application 50 - 200 lbs. per acre
* See label for complete application instructions
Formulation Professional Product
NOT FOR SALE TO PR
Shipping Weight 26.00 lbs
Manufacturer OHP Inc.
UPC 896531002053
EPA Registration 70506-519-59807

Details

APPLICATION INSTRUCTIONS

Perennial Weed Control

Apply CASORON 4G as a soil surface treatment in late fall from November 15 to February 15. Old weed growth should not be removed before application. Do not make surface application to areas which have been cultivated during the fall or summer prior to application.

Annual Weed Control

Apply CASORON 4G either in early spring before seeds of annual weeds germinate or after cultivation has removed the growing weeds. Distribute granules uniformly over the soil surface. If treatment is followed by application of 1/2 to 1 inch of water by overhead irrigation, the lower rates are recommended. Shallow incorporation immediately after application is recommended in southern areas. In other areas, shallow incorporation or sprinkler irrigation is suggested when applications are made during periods of high temperature.

Nut Sedge Control

CASORON 4G can be used for control of nutsedge in non-crop areas only. Apply recommended rates and incorporate immediately to a depth of 4 to 6 inches. Seasonal control of annual weeds will also be obtained with this application.

5 stars   11
4 stars   1
3 stars   0
2 stars   0
1 star   0
Review Search   
Sort Reviews
  • 5 of 5 Stars

    casoron 4G

    By Janice on 05/21/2016

    Excellent product, must be very careful using it does kill everything once wet..

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    22 of 22 people found this review helpful

  • 5 of 5 Stars

    5 stars for Casoron

    By Dorothy on 04/15/2017

    This was a gift sent to my son to rid the hill from weeds and having to maintain each spring, but I used this product in Montana when my home had small gravel surrounding it. Spread this all around as spring was arriving and NEVER were there any weeds growing all around my home or down the driveway. Everyone wondered how I did that!!

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    21 of 22 people found this review helpful

  • 5 of 5 Stars

    Excellent service!

    By Paula on 06/01/2018

    Product came in a box to avoid spillage in shipping. Arrived on time and in good condition. Price was better than I could find anywhere...even better than Amazon! Thank you and I will be a repeat customer.

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    7 of 8 people found this review helpful

  • 5 of 5 Stars

    Great Herbicide

    By Stacey on 06/03/2018

    We spread this herbicide through our juniperus every year at the end of winter and it keeps the Crown Vetch from growing without fail!

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    7 of 8 people found this review helpful

  • 5 of 5 Stars

    Great for preimergence

    By D.b. on 09/06/2019

    This is the best I have found for keeping growth out of areas like landings, paths etc. It's well worth the money.

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    5 of 5 people found this review helpful

See all 12 customer reviews

Questions & Answers

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Q
How dangerous is Casoron 4G Herbicide for my dog?

My 13 year old dog was exposed to it many times during the day for 5 straight days before I found out it was not safe for dogs. Do you have any suggestions that I can relay to the person that requested this chemical?

A

If the pet was not in the area during treatment and while wet, it is safe for their return. If your dog had direct exposure to the product and/or wet surfaces, we recommend that you consult with the manufacturer regarding safety. OHP Inc. can be reached at 800-659-6745. 

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3 of 4 people found this answer helpful

Q
Is it animal safe?
A

Casoron 4G Herbicide is pet safe if used as directed.  Pets should be kept out of the area while the product is being applied and watered in, but can return once dry. 

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2 of 4 people found this answer helpful

Q
Are Casoron granules safe around dogs?
A

Casoron 4G Herbicide is pet safe if used as directed.  Pets should be kept out of the area while the product is being applied and watered in, but can return once dry. 

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7 of 9 people found this answer helpful

Q
Is Casoron 4G Herbicide harmful to dogs?
A

If Casoron 4G Herbicide is applied according to the label it will not be harmful to your pet. According to the product label, do not enter or allow persons or pets to enter the treated area until granules are thoroughly watered in and treated soil has dried.

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144 of 160 people found this answer helpful

Q
I spread Casoron 30 days ago. My puppy mouths grass and weeds. Is it safe?

Casoron was spread on our vacation lot at Ocean Shores, WA 30 days ago as a prevention for new weeds. There are random weeds and grasses that had already emerged all over the lot. My 7 month old Golden Retriever puppy mouths everything. He will pull weeds and shake them, pull at branches of woody shrubs, and sometimes eat long grasses in the treated area and nearby areas. Is it safe for him to be in this area. Package says no livestock grazing for 12 months??

A
Casoron 4G should not harm pets when used as directed. You are right, this product is not to be used in grazing areas. Since you said that your puppy eats the grass, we recommend contacting Chemtura 800-423-8569. The manufacturer will be able to give you more specific advise on their product.

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27 of 35 people found this answer helpful

Q
Can I spread Casoron 4G Herbicide by hand between my arborvitae and a retaining wall on property line?

I don't have enough ground to roll my spreader. Weeds grow up through the stonewall and into the arborvite

A

Casoron 4G Herbicide is best applied with a spreader that can be set to a rate per area.  We do have a few options for hand spreaders here as an alternative to push spreaders.
 

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Q
How long do we wait after an application of Casorol 4G Herbicide to let our dogs outside?

It has rained

A

Per the product label on Casoron 4G Herbicide it requires it to be watered in after application to incorporate granules into the soil. So the rain would not hurt the appliation. You would just need to let the application dry completely before allowing your dogs back into the area.

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77 of 84 people found this answer helpful

Q
Will your product diclobenil kill bamboo?

My neighbors bamboo is growing under my fence and I want to get rid of it, however I have plants growing along my fence line, will I have to dig my plants up or can I dig down around the plants to put this diclobenil in the ground. HELP What do you recommend? HELP HELP HELP

A
Dichlobenil, the active ingredient in Casoron 4G Herbicide, is not labeled for bamboo and may not be an effective solution for your needs. We recommend that you contact your local cooperative extension office and speak to the master gardener on staff for further advice. Bamboo can be VERY difficult to eliminate but the master gardener may have some helpful tips for you.

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32 of 53 people found this answer helpful

Q
Dichlobenil

can this be used to treat sewer lines to get rid of roots?

A
No, Casoron 4G Herbicide is not labeled to be used in sewer or septic lines to kill root systems and advises against that use on the product label. However, we do have Hi Yield Root Killer that is labeled for that type of application and use. Hi-Yield Root Killer dissolves the roots that are intruding into the pipes without harming those trees and shrubs outside of the lines. This product will not corrode sewer or drain pipes that connect to septic tanks and will not kill the necessary bacteria needed for septic systems to function. Please read and follow all label driections.

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23 of 28 people found this answer helpful

Q
If Casoron was put on our front lawn, is there any way to reverse the dying grass?

If not what steps do we take to get the lawn back?

A

Since Casoron 4G Herbicide was applied to the whole lawn, it will likely stay there for at least a year so you will not be able to reseed until next year. If you have any additional questions, we would recommend contacting the manufacturer directly. Their phone number is 800-423-8569.

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Items 1 - 10 (of 40 Total)

Casoron 4G Herbicide 5 out of 5 stars Rating: 4.9 (12 Reviews / 140 Q&A)

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