Best Weed Killer for St Augustine Lawns in 2025
Updated on July 2025
#1
Recommended
40% Off
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- 3-in-1 formula designed for Southern grass varieties, addressing weeds, fire ants, and lawn health
- Effectively targets common weeds including dollarweed, dandelion, and clover
- Provides up to 6 months of fire ant control, along with protection against additional pests like fleas and ticks
- Compatible with St. Augustinegrass, Centipedegrass, Zoysiagrass, and Carpetgrass
- Covers an area of 8,000 square feet per 26.64 lb. bag
- Available for use in various Southern states including TX, FL, and GA
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- 3-in-1 formula designed for Southern grass varieties, addressing weeds, fire ants, and lawn health
- Effectively targets common weeds including dollarweed, dandelion, and clover
- Provides up to 6 months of fire ant control, along with protection against additional pests like fleas and ticks
- Compatible with St. Augustinegrass, Centipedegrass, Zoysiagrass, and Carpetgrass
- Covers an area of 8,000 square feet per 26.64 lb. bag
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#2
Value for Money
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- Easy-to-spread granules for convenient application
- Recommended for application in spring and fall
- Suitable for all St. Augustine grass varieties
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- Easy-to-spread granules for convenient application
- Recommended for application in spring and fall
- Suitable for all St. Augustine grass varieties
#3
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- Effectively eliminates broadleaf weeds including Dollarweed, Dandelion, and Clover for up to 6 months.
- Prevents growth of both grassy and broadleaf weeds, including Crabgrass and Annual Bluegrass, for a duration of 6 months.
- Suitable for southern lawns, covering an area of 4,000 square feet and compatible with St. Augustinegrass and Floratam.
- Single application offers long-lasting control of over 50 identified lawn weeds throughout the season.
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- Effectively eliminates broadleaf weeds including Dollarweed, Dandelion, and Clover for up to 6 months.
- Prevents growth of both grassy and broadleaf weeds, including Crabgrass and Annual Bluegrass, for a duration of 6 months.
- Suitable for southern lawns, covering an area of 4,000 square feet and compatible with St. Augustinegrass and Floratam.
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#4
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- Effectively targets and eliminates major broadleaf weeds such as dandelion, clover, and chickweed without damaging the lawn when applied correctly
- Provides visible results within hours of application
- Contains herbicides that effectively kill over 250 types of weeds down to the roots
- Safe for use on various grass types including Bermuda, Kentucky bluegrass, and St. Augustinegrass (excluding Floratam) with appropriate application
- Features a battery-powered Comfort Wand for easy, precise spot treatment of weeds without the need for bending or pumping
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- Effectively targets and eliminates major broadleaf weeds such as dandelion, clover, and chickweed without damaging the lawn when applied correctly
- Provides visible results within hours of application
- Contains herbicides that effectively kill over 250 types of weeds down to the roots
- Safe for use on various grass types including Bermuda, Kentucky bluegrass, and St. Augustinegrass (excluding Floratam) with appropriate application
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#5
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- Covers an area of 3,720 square feet with one quart
- Effective against weeds in St. Augustine and Centipede grasses
- Weight of the product is 1.021 kilograms
- Dimensions: 5.842 cm (L) x 19.177 cm (H) x 12.954 cm (W)
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- Covers an area of 3,720 square feet with one quart
- Effective against weeds in St. Augustine and Centipede grasses
- Weight of the product is 1.021 kilograms
- Dimensions: 5.842 cm (L) x 19.177 cm (H) x 12.954 cm (W)
#6
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- Kills common broadleaf weeds while providing nitrogen boost to the lawn
- Controls dandelion, clover, ground ivy, and other listed weeds
- Best applied when weeds are actively growing
- Suitable for various grass types including Bluegrass, Fescue, and Bermudagrass
- Covers up to 6,000 sq. ft. for warm season lawns and 4,000 sq. ft. for cool season lawns
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- Kills common broadleaf weeds while providing nitrogen boost to the lawn
- Controls dandelion, clover, ground ivy, and other listed weeds
- Best applied when weeds are actively growing
- Suitable for various grass types including Bluegrass, Fescue, and Bermudagrass
- Covers up to 6,000 sq. ft. for warm season lawns and 4,000 sq. ft. for cool season lawns
#7
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- Effectively eliminates various broadleaf weeds
- Suitable for use in centipede grass
- Offers crabgrass suppression
- Controls existing weeds as well as those germinating from seeds
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- Effectively eliminates various broadleaf weeds
- Suitable for use in centipede grass
- Offers crabgrass suppression
- Controls existing weeds as well as those germinating from seeds
#8
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- Specially designed for Southern lawns, effective on Bermudagrass, St. Augustinegrass (including Floratam), Zoysia, and Centipedegrass
- Provides up to 6 months of protection against broadleaf weeds, grassy weeds, and crabgrass
- Effectively eliminates common weeds such as Dandelion, Dollarweed, and Clover
- Nourishes your lawn, promoting growth and enhancing color
- Not available for purchase in certain states including AK, CA, CO, and others
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- Specially designed for Southern lawns, effective on Bermudagrass, St. Augustinegrass (including Floratam), Zoysia, and Centipedegrass
- Provides up to 6 months of protection against broadleaf weeds, grassy weeds, and crabgrass
- Effectively eliminates common weeds such as Dandelion, Dollarweed, and Clover
- Nourishes your lawn, promoting growth and enhancing color
- Not available for purchase in certain states including AK, CA, CO, and others
#9
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- Does not harm lawns when applied correctly, effectively controlling both existing and seed-emerging weeds.
- Contains Atrazine for effective lawn weed control in St. Augustinegrass and centipedegrass.
- Effectively targets tough weeds, including dollarweed, sandspur, and Florida betony.
- Equipped with a QuickFlip hose-end sprayer for easy activation and application.
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- Does not harm lawns when applied correctly, effectively controlling both existing and seed-emerging weeds.
- Contains Atrazine for effective lawn weed control in St. Augustinegrass and centipedegrass.
- Effectively targets tough weeds, including dollarweed, sandspur, and Florida betony.
- Equipped with a QuickFlip hose-end sprayer for easy activation and application.
#10
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- Effectively eliminates yellow and purple Nutsedge, Kyllinga, and over 50 other stubborn weeds
- Suitable for both Northern and Southern turf grasses
- Targets weeds without harming lawns
- Becomes rainproof within 2 hours
- No mixing required—ready to use
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- Effectively eliminates yellow and purple Nutsedge, Kyllinga, and over 50 other stubborn weeds
- Suitable for both Northern and Southern turf grasses
- Targets weeds without harming lawns
- Becomes rainproof within 2 hours
- No mixing required—ready to use
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