Best Pre Emergent Herbicide for St Augustine Grass in 2025
Updated on June 2025
#1
Recommended
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- Prevents the growth of weeds but does not eliminate existing ones
- Contains 0.48% prodiamine for effective early spring and fall weed control
- Targets grassy and broadleaf weeds, such as crabgrass and goosegrass
- DG Pro formulation enhances application efficiency with more particles per square inch
- Manufactured in the USA
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- Prevents the growth of weeds but does not eliminate existing ones
- Contains 0.48% prodiamine for effective early spring and fall weed control
- Targets grassy and broadleaf weeds, such as crabgrass and goosegrass
- DG Pro formulation enhances application efficiency with more particles per square inch
- Manufactured in the USA
#2
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- Combines weed killer and fertilizer to eliminate existing weeds and enhance lawn growth
- Effectively controls over 50 types of lawn weeds, such as clover, dandelion, and plantain
- Best applied to wet lawns during active weed growth when temperatures are between 60°F and 90°F
- Suitable for various grass types including Bahiagrass, Bermudagrass, and Bluegrass
- Covers an area of 5,000 sq. ft. per 14.29 lb. bag
- Not available for purchase in Florida
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- Combines weed killer and fertilizer to eliminate existing weeds and enhance lawn growth
- Effectively controls over 50 types of lawn weeds, such as clover, dandelion, and plantain
- Best applied to wet lawns during active weed growth when temperatures are between 60°F and 90°F
- Suitable for various grass types including Bahiagrass, Bermudagrass, and Bluegrass
- Covers an area of 5,000 sq. ft. per 14.29 lb. bag
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#3
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- Prevents crabgrass throughout the entire season
- Stops crabgrass before it germinates with a pre-emergent formula
- Ideal application in early spring or fall to prevent various winter weeds like Poa annua and chickweed
- Not suitable for use on Dichondra and Bentgrass lawns
- Covers an area of 5,000 sq. ft. with a single 10.06 lb. bag
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- Prevents crabgrass throughout the entire season
- Stops crabgrass before it germinates with a pre-emergent formula
- Ideal application in early spring or fall to prevent various winter weeds like Poa annua and chickweed
- Not suitable for use on Dichondra and Bentgrass lawns
- Covers an area of 5,000 sq. ft. with a single 10.06 lb. bag
#4
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- Prevents crabgrass and other listed weeds while providing nutrients for lawn recovery.
- Effective against various weeds including barnyard grass, foxtail, Poa annua, chickweed, and oxalis.
- For best results, apply to a dry lawn in early spring before temperatures exceed 80°F; rainfall or freezing will not impact effectiveness.
- Not suitable for use on Dichondra and Bentgrass lawns.
- Covers an area of up to 15,000 square feet per 40.05 lb. bag.
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- Prevents crabgrass and other listed weeds while providing nutrients for lawn recovery.
- Effective against various weeds including barnyard grass, foxtail, Poa annua, chickweed, and oxalis.
- For best results, apply to a dry lawn in early spring before temperatures exceed 80°F; rainfall or freezing will not impact effectiveness.
- Not suitable for use on Dichondra and Bentgrass lawns.
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#5
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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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#6
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- Stops crabgrass before it can grow and provides nutrients for quick lawn recovery after winter.
- Prevents various weeds such as crabgrass, barnyard grass, foxtail, poa annua, chickweed, and oxalis.
- Best applied to a dry lawn in early spring before the third or fourth mowing, when temperatures are consistently below 80°F.
- Product performance remains unaffected by rain, snow, or freezing conditions following application.
- Covers an area of 14,000 sq. ft. with one 37.38 lb. bag.
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- Stops crabgrass before it can grow and provides nutrients for quick lawn recovery after winter.
- Prevents various weeds such as crabgrass, barnyard grass, foxtail, poa annua, chickweed, and oxalis.
- Best applied to a dry lawn in early spring before the third or fourth mowing, when temperatures are consistently below 80°F.
- Product performance remains unaffected by rain, snow, or freezing conditions following application.
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#7
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- Effective herbicide for controlling 46 weed species, including crabgrass and dandelion.
- Can be safely applied during seeding or overseeding of lawns.
- Targets both new and existing weeds while protecting desired grass.
- Simply measure and pour with an easy-to-use dispensing bottle.
- Established brand known for its active ingredient mesotrione, trusted by lawn care professionals.
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- Effective herbicide for controlling 46 weed species, including crabgrass and dandelion.
- Can be safely applied during seeding or overseeding of lawns.
- Targets both new and existing weeds while protecting desired grass.
- Simply measure and pour with an easy-to-use dispensing bottle.
- Established brand known for its active ingredient mesotrione, trusted by lawn care professionals.
#8
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- Controls common grassy and broadleaf weeds in St. Augustine and centipede lawns.
- Surfactant enhances coverage and penetration of the herbicide.
- Provides effective suppression of crabgrass.
- Includes 1-gallon containers of Atrazine weed killer and surfactant.
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- Controls common grassy and broadleaf weeds in St. Augustine and centipede lawns.
- Surfactant enhances coverage and penetration of the herbicide.
- Provides effective suppression of crabgrass.
- Includes 1-gallon containers of Atrazine weed killer and surfactant.
#9
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- PREEMERGENT WEED CONTROL - Apply in spring to prevent weeds and crabgrass throughout the season.
- READY TO USE - Easy application, effective for up to four months and can be applied later than other preventers.
- COVERAGE - Treats up to 5,000 square feet, suitable for both cool-season and warm-season turf.
- WEED CONTROL - Targets over 20 types of weeds including foxtail, chickweed, and spurge.
- APPLICATION GUIDELINES - Designed for lawns and ornamentals; avoid application on fruit and vegetable plants.
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- PREEMERGENT WEED CONTROL - Apply in spring to prevent weeds and crabgrass throughout the season.
- READY TO USE - Easy application, effective for up to four months and can be applied later than other preventers.
- COVERAGE - Treats up to 5,000 square feet, suitable for both cool-season and warm-season turf.
- WEED CONTROL - Targets over 20 types of weeds including foxtail, chickweed, and spurge.
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#10
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- Prevents weed growth at the seedling stage, allowing new grass to grow healthily.
- Tenacity is effective for both pre-emergent and post-emergent weed control in turfgrasses.
- Weeds absorb Tenacity upon emergence from the soil when used as a pre-emergent treatment.
- Targets a variety of weeds including Barnyardgrass, Chickweed, Crabgrass, Dandelion, and more.
- Shelf life is 5-8 years when stored properly, as indicated by the manufacture date on the bottle.
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- Prevents weed growth at the seedling stage, allowing new grass to grow healthily.
- Tenacity is effective for both pre-emergent and post-emergent weed control in turfgrasses.
- Weeds absorb Tenacity upon emergence from the soil when used as a pre-emergent treatment.
- Targets a variety of weeds including Barnyardgrass, Chickweed, Crabgrass, Dandelion, and more.
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