Southern Ag Atrazine Weed Killer for St. Augustine Grass


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5.0 Rating: 5.0

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  Size/Description Price/Ea. Qty  
Southern Ag Atrazine Weed Killer for St. Augustine Grass quart(s) (32 oz)

Buy 1: $14.95 each

Buy 2 or more: $14.50 each

Buy 6 or more: $12.50 each

Total Price: $0.00

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For large order quotes, please call us at 1-866-581-7378.

Southern Ag Atrazine Weed Killer for St. Augustine Grass

Southern Ag Atrazine Weed Killer for St. Augustine Grass is for use in St. Augustine Grass and Centipede Grass. Southern Ag Atrazine Weed Killer for St. Augustine Grass kills many broadleaf weeds and suppresses crabgrass. Southern Ag Atrazine Weed Killer for St. Augustine Grass controls both emerged weeds and weeds from seeds.

Active Ingredient: Atrazine - 4.00%
Target pests: Annual Bluegrass (Poa annua), Chickweed (Common and Mouseear), Crabgrass (suppression only), Cransbill, Cudweed, Dichondra, Florida Betony, Henbit, Knotweed, Lespedeza, Moneywort, Mustards, Narrowleaf Vetch, Parsley-Piert, Sandspur, Smutgrass, Spurge, Spurweed, Swinecrest, Woodsorrel and various annual clovers
For use in: St. Augustine Grass and Centipede Grass
Application: 4.3 oz. per gallon of water per 500 sq. ft.
1.1 pint per 4 gallons of water per 2,000 sq. ft.
* See label for complete list
Pet safe: Yes, when used as directed on label
Coverage Area: 3,700 sq. ft.
Manufactured By: Southern Ag

ESTABLISHED ST. AUGUSTINE GRASS and CENTIPEDE GRASS.This product may be applied during both dormant and growing seasons. Best results are usually obtained when applied in early spring or dormant periods when weeds are small or have not emerged. Do not apply more than two treatments per year.

This product controls Spurweed, Florida Betony, Annual Bluegrass and many other problem weeds in St. Augustinegrass and Centipedegrass turfs. This product will control both emerged weeds and weeds from seeds. Rain or water within 2 or 3 days of application may decrease the effectiveness on emerged weeds. However, for the control of weeds from seeds, rainfall or watering is necessary within 7 to 10 days after treatment.

SPURWEED: Control of Spurweed can best be obtained by applying when Spurweed has newly emerged (December and January).

FLORIDA BETONY: This weed emerges in the fall. Apply this product in mid to late October followed by a second application in mid to late February.

DICHONDRA, MONEYWORT: Apply this product in early April followed by a second application in July.

Note: Applications for SPURWEED or FLORIDA BETONY generally will give control or suppression of the other listed weeds. However, as a general rule, this product will give best control when applied to young tender weeds or just prior to weed emergence.

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  • 5 of 5 Stars  Atrazine stamps out dollar weed
    By Ray in Jensen Beach, FL on March 17, 2015
    Verified Purchase

    Once again Atrazine has come to my rescue! A heavy infestation of dollar weed was easily controlled and eliminated. Thanks to Do My Own Pest Control timely response to all of my inquiries, I now enjoy a fine lawn.

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June 25, 2012Carl from Arlington Tx. asked:

QCan I use Southern Ag Atrazine on Bermuda grass with out any harmfull effects on my lawn?

ASouthern Ag Atrazine Weed Killer is formulated specifically for St Augustine and Centipede grasses only and should not be used on Bermuda grass. We do carry a full line of selective herbicides of which many are labeled for use on Bermuda. Each product on our site has the product label link in the description page for your convenience. We are always here to answer questions or make recommendations should you need help.

2 of 3 people found this answer helpful.
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September 3, 2014Joe from Conn asked:

QWhat herbicide can I use in my corn fields and what herbicide can I use in my potatoe fields to control weeds?


We are not as familiar with products that are safe to be used in agricultural areas such as corn fields as we are new to that side of products. We recommend contacting your local department of agriculture to get recommendations that local farmers use for weed and grass control in crops. Once they give you a product name or ingredient, give us a call and we would be more than happy to see if we carry it or can get it for you. 1-866-581-7378.

We do have the Vegetable & Ornamental Weeder that can be used in potatoe plantings.   It is a pre-emergent herbicide that helps to control grasses and broadleaf weeds.

1 of 1 people found this answer helpful.
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March 7, 2013Steven from Frisco, Texas asked:

QCan I use atrazine, 2-4D, and Dicamba at the same time on my pre-spring St. Augustine?
I have henbit, crabgrass, and spurge (a whole lot of all of them); and my St. Augustine is not perfectly healthy right now. I want to get ahead of the weeds, but I don't want to harm my grass, which is still hibernating. I intend to give the grass some good fertilizer, acidify the soil, and get some iron on it as soon as it wakes up, but when it wakes up, the crabgrass and spurge will happily join the already overflowing henbit and choke my St. Augustine to death.


Since you mentioned that your St. Augustine grass is not perfectly healthy right now, we are hesitant to recommend that you apply anything as you may cause more harm to your lawn than good.  Herbicide product labels recommend applying products only to healthy lawns, and knowing that St Augustine grass is a sensitive grass we would advise that you contact a local landscaping company or master gardener in your area for the best advice on how to treat while the lawn is not healthy.

0 of 2 people found this answer helpful.
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January 22, 2015Bill from Ocala, Fl. asked:

QFor getting rid of dollar weed in my lawn ?
The lawn is St, Augustine grass.


Speedzone Southern is labeled for Dollarweed and for use on St Augustine grass. According to the Speedzone Southern product label: The turf tolerance to this product may vary and temporary turf grass yellowing may occur on St Augustine. Do not apply Speedzone Southern to Floratam, Bitterblue or other improved species of St Augustine. Do not broadcast or spot spray St Augustine during the fall to winter transition or if temperatures are expected to fall below 40F within 10 days of the application.

Please take a few moments to read through the product label completely for full instructions and other precautions.

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June 3, 2014Byron asked:

QWhat controls artillery fern in St.Augustine grass?

AArtillery Fern is very hard to control. You could use a glyphosate product like Roundup to spot treat. We recommend to contact your Master Gardener through your Extension Office for advice on what you could use that will not harm St. Augustine Grass.

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