It's hard to know which is good lawn weed killer for st.augustine grass. There are alot of lawn weed killer for st.augustine grass reviews on internet. In this article we suggest top 10 the best lawn weed killer for st.augustine grass for you. Please read carefully and choose what is the best lawn weed killer for st.augustine grass for you.

It’s hard to know which is good lawn weed killer for st.augustine grass. There are alot of lawn weed killer for st.augustine grass reviews on internet. In this article we suggest top 10 the best lawn weed killer for st.augustine grass for you. Please read carefully and choose what is the best lawn weed killer for st.augustine grass for you.

Best lawn weed killer for st.augustine grass

Product Features Editor's score Go to site
Compare-N-Save Concentrate Grass and Weed Killer, 41-Percent Glyphosate, 1-Gallon Compare-N-Save Concentrate Grass and Weed Killer, 41-Percent Glyphosate, 1-Gallon
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Scotts Turf Builder Bonus S Southern Weed & Feed2, 5,000 sq. ft. Scotts Turf Builder Bonus S Southern Weed & Feed2, 5,000 sq. ft.
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Ortho RTS Weed B Gon Weed Killer for St. Augustinegrass 32 oz (Sold in select Southern states) Ortho RTS Weed B Gon Weed Killer for St. Augustinegrass 32 oz (Sold in select Southern states)
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Ortho Weed B Gon Plus Crabgrass Control Ready-To-Use Comfort Wand, 1 gallon Ortho Weed B Gon Plus Crabgrass Control Ready-To-Use Comfort Wand, 1 gallon
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Spectracide Weed Stop For Lawns For St. Augustine & Centipede Lawns Concentrate, Ready-to-Spray, 32-Ounce, 6-Pack Spectracide Weed Stop For Lawns For St. Augustine & Centipede Lawns Concentrate, Ready-to-Spray, 32-Ounce, 6-Pack
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Scotts Turf Builder Southern Triple Action - Kills Dollarweed and Clover, Prevents and Kills Fire Ants, Feeds and Strengthens Lawns - Covers up to 4,000 sq. ft. Scotts Turf Builder Southern Triple Action - Kills Dollarweed and Clover, Prevents and Kills Fire Ants, Feeds and Strengthens Lawns - Covers up to 4,000 sq. ft.
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Southern Ag Atrazine St. Augustine Weed Killer, 128oz  1 Gallon Southern Ag Atrazine St. Augustine Weed Killer, 128oz 1 Gallon
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Southern Ag Atrazine St. Augustine Weed Killer, 32oz  1 Quart Southern Ag Atrazine St. Augustine Weed Killer, 32oz 1 Quart
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Scotts DiseaseEx Lawn Fungicide, 10 LB - Lawn Disease Prevention and Control for Brown Patch, Yellow Patch, Stem and Stripe Rust, Red Thread, and More As Listed Scotts DiseaseEx Lawn Fungicide, 10 LB - Lawn Disease Prevention and Control for Brown Patch, Yellow Patch, Stem and Stripe Rust, Red Thread, and More As Listed
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Southern Ag Lawn Weed Killer with Trimec Herbicide, 128oz - 1 Gallon Southern Ag Lawn Weed Killer with Trimec Herbicide, 128oz - 1 Gallon
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1. Compare-N-Save Concentrate Grass and Weed Killer, 41-Percent Glyphosate, 1-Gallon

Feature

Rainproof in 2 hours
Visible results in as little as 2 to 4 days
Contains 41-percent glyphosate
Covers over 25,000 sq. ft
Makes up to 85 gal. of ready-to-use spray

Description

Get to the root and kill grass and weeds with Compare-N-Save 41-percent Glyphosate Concentrate Grass and Weed Killer. Use for lawn or garden replacement, on patios, walkways, or in and around fences and gardens to remove unwanted grass and weeds. The 2.5 gal. container will treat over 630,000 sq. ft. with visible results in as little as 2 to 4 days. Kills all grass and weeds.

2. Scotts Turf Builder Bonus S Southern Weed & Feed2, 5,000 sq. ft.

Feature

Apply when weeds are actively growing
Kills dollarweed and other listed lawn weeds
Feeds and strengthens against heat and drought
Only for use on St. Augustine grass (including Floratam), Centipede, Zoysia and Carpetgrass lawns

Description

Apply when grass and weeds are actively growing. Scotts Turf Builder Bonus S Southern Weed & Feed will not only kill existing weeds, but thicken your lawn to help crowd out future weeds. Regular feedings provide the nutrients your lawn needs to look its best and withstand the stresses of weeds, heat, drought, and family activity. Our original Bonus S product is safe for use on Centipede, St. Augustine grass (including Floratam), Zoysia and Carpet grass lawns. Available in FL (except Panhandle), HI, OK, TX.

3. Ortho RTS Weed B Gon Weed Killer for St. Augustinegrass 32 oz (Sold in select Southern states)

Feature

For use on St. Augustinegrass including Floratam
Kills 250+ listed weeds (See label for listed weeds.)
Won't harm the lawn - Guaranteed (When used as directed.)
Rain-proof in 1 hour
Treats up to 2,500 sq. ft.

Description

Ortho Weed B Gon Weed Killer for St. Augustinegrass Ready-To-Spray is guaranteed to kill weeds down to their roots. The easy grip control is perfect for broadcast applications so you can kill over 250+ weeds without damaging your lawn. (When used as directed.) Use Orthos #1 weed killer for St. Augustinegrass lawns, including Floratam.

4. Ortho Weed B Gon Plus Crabgrass Control Ready-To-Use Comfort Wand, 1 gallon

Feature

Kills crabgrass, dandelions and other common lawn weeds
Kills weeds to the roots
Kills 200+ weeds
Won't harm listed landscape plants (When used as directed)
Starts working immediately

Description

Ortho Weed B Gon plus Crabgrass Control Ready-To-Use2 is guaranteed to kill crabgrass, dandelions, and other listed common lawn weeds to the root! With the convenient trigger applicator, you can kill 200+ weeds without damaging your lawn (When used as directed) for easy and effective spot treatment. And Ortho Weed B Gon starts working immediately; see results in hours!

5. Spectracide Weed Stop For Lawns For St. Augustine & Centipede Lawns Concentrate, Ready-to-Spray, 32-Ounce, 6-Pack

Feature

KILLS THE WEEDS, NOT THE LAWN: For use on all varieties of St. Augustinegrass and centipedegrass - kills the weeds, not the lawn when used as directed.
KILLS ESTABLISHED WEEDS: Including dollarweed, sandspur and Florida betony (see product label for complete list).
CONTROLS WEEDS FROM SEEDS: Prevents weeds from emerging in the lawn.
QUICKFLIP HOSE-END SPRAYER: Attaches easily to your garden hose and activates at the flip of a switch.
MONEY-BACK GUARANTEE: Guaranteed results or your money back - see product label for details.

Description

The power is in your hands to keep your landscape in line unleash it with Spectracide lawn and garden products. Our easy-to-use, fast-acting insect, lawn disease and weed control solutions help you tame lawn and landscape invaders with incredible pest-punishing power. Take command with Spectracide brand. You hold the power. Spectracide Weed Stop For Lawns For St. Augustine & Centipede Lawns Concentrate is formulated specifically for use on all St. Augustinegrass varieties as well as centipedegrass. It kills the weeds, not the lawn when used as directed. This atrazine-based formula controls both emerged tough weeds and weeds from seeds. Use it to control established weeds, including dollarweed, sandspur and Florida betony, and prevent weeds from emerging in the lawn. Spray any time temperatures are below 90 degrees. The QuickFlip hose-end sprayer activates at the flip of a switch. Spray Spectracide Weed Stop For Lawns For St. Augustine & Centipede Lawns Concentrate when temperatures are between 60 degrees and 90 degrees spraying in cooler temperatures may result in slower weed control. This formula can be applied during both dormant and growing seasons, but for best results, apply in early spring or in dormant periods when weeds or small or have not yet emerged. This concentrate bottle will treat 3,720 square feet of listed grasses.

6. Scotts Turf Builder Southern Triple Action - Kills Dollarweed and Clover, Prevents and Kills Fire Ants, Feeds and Strengthens Lawns - Covers up to 4,000 sq. ft.

Feature

Kills, prevents and feeds
Kills dollar weed and Clover
Prevents and kills fire ants up to 6 months
Feeds and strengthens lawns against heat and drought
For use on St. Augustine grass (including Flora tam), Centipede grass, and carpet grass

Description

Scotts, 4, 000 soft coverage, turf Builder southern triple action fertilizer kills dollarweed & Clover to the root, kills & prevents fire ants forup to 6 months, feeds & strengthens lawns to protect against heat & drought. Scotts, feeds & strengthens lawns to protect against heat & drought.

7. Southern Ag Atrazine St. Augustine Weed Killer, 128oz 1 Gallon

Feature

Controls Weeds in St. Augustine and Centipede Grasses
One gallon treats 14,880 sq ft

Description

ATRAZINE ST. AUGUSTINE WEED KILLER Kills many broadleaf weeds Also used in centipede grass Provides suppression of crabgrass Controls emerged weeds and weeds from seed CONTAINS:4% Atrazine USE ON: St. Augustine and centipede lawn grasses. CONTROLS: Many common grassy and broadleaf weeds. RATE: 4 1/3 ounces per 500 sq. ft. per 1 gallon of spray APPLICATION: Apply in 2 gallons of water to cover 1,000 sq. ft. CAUTION: SPRAY TO ACCURATELY OBTAIN INDICATED COVERAGE WITHOUT OVERLAP. NOT RECOMMENDED FOR USE WITH HOSE-END SPRAYERS. Best results are obtained by application in early spring.

8. Southern Ag Atrazine St. Augustine Weed Killer, 32oz 1 Quart

Feature

Controls Weeds in St. Augustine and Centipede Grasses
One quart treats 3,720 sq ft

Description

ATRAZINE ST. AUGUSTINE WEED KILLER Kills many broadleaf weeds Also used in centipede grass Provides suppression of crabgrass Controls emerged weeds and weeds from seed CONTAINS:4% Atrazine USE ON: St. Augustine and centipede lawn grasses. CONTROLS: Many common grassy and broadleaf weeds. RATE: 4 1/3 ounces per 500 sq. ft. per 1 gallon of spray APPLICATION: Apply in 2 gallons of water to cover 1,000 sq. ft. CAUTION: SPRAY TO ACCURATELY OBTAIN INDICATED COVERAGE WITHOUT OVERLAP. NOT RECOMMENDED FOR USE WITH HOSE-END SPRAYERS. Best results are obtained by application in early spring.

9. Scotts DiseaseEx Lawn Fungicide, 10 LB - Lawn Disease Prevention and Control for Brown Patch, Yellow Patch, Stem and Stripe Rust, Red Thread, and More As Listed

Feature

Fast acting - starts working in 24 hours
Broad Spectrum disease prevention and control
Controls brown patch and other Common lawn diseases
Systemic formula controls up to 4 weeks
Controls 26 types of diseases
Treats up to 5,000 sq. ft

Description

Scotts Disease-Ex Lawn Fungicide, 10 lb

10. Southern Ag Lawn Weed Killer with Trimec Herbicide, 128oz - 1 Gallon

Feature

For use on 9 turf types
Controls a wide range of lawn weeds
A patented combination of 3 proven weed killers
Directions for use in conventional & hose end sprayers

Description

CONTAINS: 5.30% Mecoprop, 3.05% 2,4-D, 1.29% Dicamba. USE ON: St. Augustine (Note: Not for use on improved St. Augustine varieties in the South), bermuda, bahia, blue grass, fescues, rye and centipede. CONTROLS: Most broadleaf weeds. RATE: 1 to 1+ oz. per gallon to 400 sq. ft. for southern grasses. 1+ oz. per gallon to 400 sq. ft. for Northern Grasses. APPLICATION: Apply as a uniform spray with a fan nozzle on turf or follow the labeled directions for using a hose end sprayer. CAUTION: Avoid spray drift on shrubs & trees. Spray to accurately obtain indicated coverage.

Conclusion

All above are our suggestions for lawn weed killer for st.augustine grass. This might not suit you, so we prefer that you read all detail information also customer reviews to choose yours. Please also help to share your experience when using lawn weed killer for st.augustine grass with us by comment in this post. Thank you!