Best Syngenta Weed Killers in 2026

Roundup Super Concentrate Weed & Grass Killer is a great value for large areas

Rainproof in 30 minutes

Weeds usually yellow and wilt as fast as 2-4 days

Product 1: Eliminates weeds at seedlings so new grass can flourish.

Product 1: Brand name: Syngenta

Product 1: Made in United States

Eliminates weeds at seedlings so new grass can flourish.

Tenacity is a systemic pre-emergence and post-emergence herbicide for the selective contact and residual control of weeds in turfgrasses.

When applied as a pre-emergent, weeds absorb Tenacity during emergence from the soil.

Tenacity is a systemic pre-emergence and post-emergence herbicide for the selective contact and residual control of weeds in turfgrasses.

When applied as a pre-emergent, weeds absorb Tenacity during emergence from the soil.

Target pests: Barnyardgrass, Carpetweed, Chickweed, Clover, Crabgrass (large & smooth), Dandelion, Foxtail, Goosegrass, Henbit, Yellow Nutsedge, Purslane, Thistle, Wild Carrot and others

Eliminates weeds at seedlings so new grass can flourish.

Brand name: Syngenta

Made in United States

Kill weeds without harming your lawn (when used as directed) with Ortho WeedClear Lawn Weed Killer Ready-To-Use Refill; kills all major broadleaf weeds (see label for weed list), including dandelion, chickweed and crabgrass

RESULTS IN HOURS: This weed killer is rainproof in 1 hour and delivers visible results in hours, after just one application.

OVER 200 TYPES OF WEEDS: Kills weeds to the roots and won't harm the lawn when used as directed; kills over 200 types of weeds (see label for weed list)

Product code: 6278 Fusilade II Turf and Ornamental Herbicide

Type: post-emergent

0.75 ozs. per gal. of water covers approximately 1000 sq. ft. Note Fusalide II should be used with a nonionic surfactant

CONTAINS NO GLYPHOSATE - Natural, Concentrated Formula For Making 250+ Types of Weeds and Grasses Stop Right in Their Tracks. Weeds and Grass Will Look Like You Took A Torch To Them.

EASY TO USE - People & Pet Friendly. Ready To Use, Just Spray and Go. No Messy Mixing or Diluting.

PLACES TO USE - Use Anywhere You Donâ€t Want Weeds and Grass Growing Such As, Around Flower Beds, Shrubs and Trees, Barns, Driveways, Edging, Fence Lines, Foundations, Gravel Areas, Mulch Beds, Overgrown Weed Areas, Parking Areas, Patios, Pavers, Pool Areas, Rock Walls and Pathways, Walkways, Wells & Water Systems. Any Location Where No Vegetation is Wanted

KILLS WEEDS TO THE ROOTS – Earth’s Ally is a non-selective, ready-to-use herbicide proven to eliminate common weeds like broadleaf, crabgrass, dandelion, clover, ivy and chickweed.

NO HARSH SYNTHETIC CHEMICALS – Earth’s Ally kills weeds with the power of sea salt. The pet safe weed killer contains safe ingredients that are an effective alternative to harsh synthetic chemicals.

VISIBLE RESULTS IN 3 HOURS - Spray weeds on a dry, sunny day and get visible results in 3 hours with our easy-to-use garden sprayer. About 4-5 sprays per weed will kill to the root on the first pass.

🐶 NATURAL - NO Glyphosate. Our Product Includes Natural Ingredients.

🐱 WE'RE PET LOVERS TOO - Our Pets Are Like Our Children. Truth Be Told We Like Our Pets More Than Some People. We Will Do Anything To Protect Them.

🐕 COMMUNITY MINDED - A Portion of Each Sale is Donated To Animal Shelters Nationwide.

Simazine - 41.9%

When tank mixing or sequentially applying simazine or products containing simazine, the total

For use in Golf courses, residential and commerical lawns (Warm Season grasses only), nurseries, landscapes and ornamental plantings, Christmas tree plantings, sod farms (Florida only), and shelter belts * See label for complete list

Active Ingredient: Diquat - Non Toxic to Fish. Manages weed problems in aquatic, grounds maintenance and landscaping areas. Great for Golf Course Landscape Management, Amusement Parks and other Recreational Facilities

Can be used along the edges and non-flooded areas of ponds, lakes, drainage ditches and canals

Once applied, it diffuses rapidly through the cuticle and then throughout the leaf tissue of the weed. The first effects can be seen within an hour

🐶 NATURAL - NO Glyphosate. Our Product Includes Natural Ingredients.

🐱 WE'RE PET LOVERS TOO - Our Pets Are Like Our Children. Truth Be Told We Like Our Pets More Than Some People. We Will Do Anything To Protect Them.

🐕 COMMUNITY MINDED - A Portion of Each Sale is Donated To Animal Shelters Nationwide.

PREVENT WEED DEVELOPMENT: Barricade 4FL controls the growth and development of weeds before they germinate. Barricade 4FL will not control weeds after they have germinated. This product is labeled for use in a broad range of areas such as vegetation sites, turf species, weed control, grass, broadleaf weeds, established turfgrasses, lawns, sod nurseries, and Christmas tree farms.

LONG-LASTING PREEMERGENCE WEED PREVENTION: Take action before unsightly vegetation infiltrates your landscaped lawn with our pre-emergent concentrate. One application can prevent weeds season long when used as directed. You can apply this selective weed spray solution several months before germination and expect it to work well into the peak season.

ULTRA EFFECTIVE: You can use more Barricade for season-long targeted weed control and modulate your use during shorter growing seasons. It's the ideal weed prevention solution for your container, field-grown, and landscape ornamentals.

Product 1: Eliminates weeds at seedlings so new grass can flourish.

Product 1: Brand name: Syngenta

Product 1: Made in United States

Group 1 Herbicide

Postemergence Herbicide Control of Perennial and Annual Grass Weeds

Fluaifop-P-butyl active ingredient 24.5%

Offers low-rate, season-long control of crabgrass, Poa annua, and other grassy and broadleaf weeds

Allows for applications as early as January that last the entire season.

Offers dial-in rates for cost efficiency, especially in northern regions

Product 1: Tenacity is a systemic pre-emergence and post-emergence herbicide for the selective contact and residual control of weeds in turfgrasses.

Product 1: When applied as a pre-emergent, weeds absorb Tenacity during emergence from the soil.

Product 1: Target pests: Barnyardgrass, Carpetweed, Chickweed, Clover, Crabgrass (large & smooth), Dandelion, Foxtail, Goosegrass, Henbit, Yellow Nutsedge, Purslane, Thistle, Wild Carrot and others

Product 1: Tenacity is a systemic pre-emergence and post-emergence herbicide for the selective contact and residual control of weeds in turfgrasses.

Product 1: When applied as a pre-emergent, weeds absorb Tenacity during emergence from the soil.

Product 1: Target pests: Barnyardgrass, Carpetweed, Chickweed, Clover, Crabgrass (large & smooth), Dandelion, Foxtail, Goosegrass, Henbit, Yellow Nutsedge, Purslane, Thistle, Wild Carrot and others

BRUSH & POISON IVY KILLER: Roundup Poison Ivy Plus Tough Brush Killer kills over 200 types of weeds and grasses including Woody Brush and Vines, Poison Ivy, Poison Oak, Poison Sumac, Kudzu, and Wild Blackberry

FAST ACTING: Visible results in as fast as 24 hours

GUARANTEE: Kills weeds to the root so weeds don't come back. (If for any reason you are not satisfied after using this product, simply send us original proof of purchase and we will refund the purchase price)

Roundup Super Concentrate Weed & Grass Killer is a great value for large areas

Rainproof in 30 minutes

Weeds usually yellow and wilt as fast as 2-4 days

Tenacity herbicide can be used for pre- and post-emergence control of more than 46 broadleaf weed and grass species.