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ENVU (FORMERLY BAYER)
Celsius WG Herbicide
Celsius WG Herbicide is a post-emergent herbicide that delivers excellent performance on warm-season grasses and removes up to 120 species of annual and broadleaf perennial weeds and grasses.
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Celsius WG Herbicide 10 Oz product page
Min : 10.35 - Max : 136
Price as of
09/26/25
09/26/25
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Celsius WG, manufactured by Bayer, is a professional-quality herbicide designed for post-emergent control on annual and broadleaf weeds and grasses like St. Augustine. It has some residual activity to prevent certain weeds from germinating.
This easy-to-use herbicide comes in water-dispersible granules that must be thoroughly and uniformly mixed in water and applied as a spray. Each pack covers up to 2,000 sq. ft. at the highest application rate while also delivering lower phytotoxicity in areas with high temperatures.
Celsius WG provides broad-spectrum control of grassy weeds like crabgrass. Up to 3 active ingredients help cease weed growth within hours of application.
Tools Needed
Mix the product in a backpack sprayer or hand can to use Celsius WG.
How to Use
- Step 1: Determine how much Celsius WG to use by measuring the square footage of the treatment area. To do this, measure the length and width of the treatment area in feet, then multiply them together (length X width = square footage). For acreage, divide the square footage by one acre (square footage / 43,560 sq. ft. = acres). For spot treatments, mix 0.057 to 0.113 oz. (1.6 to 3.2 grams) of Celsius WG per gallon of water per 1,000 sq. ft. Do not apply more than a total of 7.4 oz (210 grams) of product per acre (0.17 oz or 4.8 grams of product per 1,000 sq. ft.) per year.
- Step 2: Fill your sprayer tank with half the amount of water, add the appropriate amount of Celsius WG, and fill the tank with the remaining half of water. Shake the sprayer tank until the solution is well-mixed.
- Step 3: Spray the target weed, ensuring even coverage via the fan spray setting. Check back after 2 to 4 weeks, and if grassy weeds are still present, perform a second application. Do not mow immediately after treatment with this product or before the spray has dried. After treatment, do not transfer clippings to non-target areas. For best results, do not irrigate until the spray has dried.
Where to Use
Use Celsius WG on warm-season turf on residential and commercial warm-season lawns or commercial properties such as sod farms, sports fields, parks, campsites, recreational areas, roadsides, school grounds, cemeteries, and golf courses (minus golf course greens and collars).
Do not use this product on bahiagrass or cool-season turf types, including tall fescue, fine fescue, Kentucky bluegrass, perennial ryegrass, or creeping bentgrass.
When to Use
Spray Celsius WG when turf is established or 4 weeks have passed for newly established turfgrasses. Grassy weed control is more rapid when soil temperatures are above 65 degrees, soil moisture is adequate for weed growth, and weeds are not under environmental stress (e.g., drought).
Safety Information
Celsius WG is safe to use around children and pets when applied according to the product label instructions. Always wear the proper personal protective equipment (PPE) when mixing and applying this product.
Do not allow people or pets to enter the treated areas until the spray has dried.
Special Considerations
It is advised not to use a surfactant during spot treatment on St. Augustine grasses because of the risk of damage it can cause to the turf.
| Availability | Online |
| Restricted Use | No |
| Shipping Restrictions | 0.226 Ounce: CA, CT, IN, NY, VT 10 Ounce: CA, CT, IN, NY, VT |
| Brand | ENVU (FORMERLY BAYER) |
| Keith's Pro Tips | "Apply Celsius WG Herbicide only to the necessary areas; it's not necessary to spray the entire lawn. This will also save your product and reduce waste." |
| Product Drawbacks | Spot treatments of Celsius WG Herbicide ,to St. Augustine grass at turf temperatures of 90 degrees or higher may cause temporary growth regulation. This product can also affect some ornamentals and is not recommended for use near the roots or newly plants |
| Target Pests | American Burnweed, Annual Lespedeza, Asiatic Hawksbeard, Barnyardgrass, Birdseye Pearlwort, Black Medic, Black Nighshade, Blackseed Plantain, Bracted Plantain, Broadleaf Plantain, Broadleaf signalgrass, Browntop Millet, Buckhorn Plantain, California Burclover, Canada Thistle, Canada Toadflax, Carolina Dicondra, Carolina Falsedandelion, Carpetgrass, Catsear Dandelion, Chamberbitter, Common Chickweed, Common Lambsquarter, Common Millet, Common Plantain, Common Purslane, common Ragweed, Common Sunflower, common Vetch, Common Waterhemp, Corn speedwell, Creeping Beggarweed, Creeping Charlie, Creeping Speedwell, Curly Dock, Cutleaf Evening Primrose, Dallisgrass, Dandelion, Dogfennel, Doveweed, Eastern Black Nightshade, Entireleaf Morningglory, Fall Panicum, Field Madder, Field Pepperweed, Field Sandbur, Field Violet, Fireweed, Florida Betony, Florida Pusley, Giant Foxtail, Giant Ragweed, Gophertail Lovegrass, Green Foxtail, Green Kylinga, Ground Ivy, Hairy Bittercress, Hairy Nightshade, Heartwing Sorrel, Heath Aster, Hemp Sesbania, Henbit, Hop Medic, Horse Purslane, Horseweed, Indian Chickweed Carpetweed, ivyleaf Morningglory, Johnsongrass, Knawel, Lady's Mantle, Lawn Burweed, Mouse-ear Chickweed, Narrowleaf Plantain, Oxeye daisy, Paleseed Plantain, Palmer Amaranth, Parsley Piert, Pennsylvania Smartweed, Pennywort Dollarweed, Pitted Morningglory, Pokeberry, Poorjoe, Prickly Sida, Proso Millet, Prostrate Knotweed, Purple cudweed, Quackgrass, Rabbitfoot Clover, Red Fescue, Red Sorrel, Redroot pigweed, Rescuegrass, Russian thistle, Shattercane, Shepard's purse, Sicklepod, Slender Aster, Spiny sowthistle, Sprawling Horseweed, Stinkgrass, Swinecress, Switchgrass, Tall Fescue, Tansy Mustard, Texas Panicum, Thin Paspalum, Trampweed Facelis, Velvetleaf, Venus Looking glass, Virginia Buttonweed, Virginia Dwarf Dandelion, Western Ragweed, White Clover, White Mustard, White Sweet Clover, Whiteleaf Sage, Wild Buckwheat, Wild Carrot, Wild Garlic, Wild Lettuce, Wild Oat, Wild Onion, Wild Pansey, Yellow Foxtail, Yellow Rocket, and Yellow Woodsorrel. |
| Application Equipment | Backpack Sprayer, Pump Sprayer |
| Application Methods | Broadcast Spray, Spot Treatment |
| Active Ingredient | Thiencarbazone-methyl 8.7%, Iodosulfuron-methyl-sodium 1.9%, and Dicamba 57.4%. |
| Product Type | Herbicide |
| Formulation | Water Dispersible Granule (WDG) |
| Application Rate | For spot treatments, mix 0.057 to 0.113 oz. (1.6-3.2 g) of Celsius WG Herbicide per gallon of water per 1,000 sq. ft. |
| Yield | 10 oz. of Celsius WG Herbicide will cover up to 5 acres. |
| Use Sites | Outdoors |
| Time to Kill | The soil activity of Celsius WG Herbicide provides a barrier of control for up to 60 days after the application is made. |
| Comparable Products | Monument 75 WG |
| Use Caution With | St Augustine |
| EPA Registration # | 101563-141 |
| Restricted Use | No |
|---|---|
| Shipping Restrictions | CT |
| Availability | Online |
| Signal Word | CAUTION |
| Keith's Pro Tip | "Apply Celsius WG Herbicide only to the necessary areas; it's not necessary to spray the entire lawn. This will also save your product and reduce waste." |
| Target Pests Multi | American_Burnweed, Annual Lespedeza, Asiatic Hawksbeard, Barnyardgrass, Birdseye Pearlswort, Black Medic, Black Nightshade, Blackseed_Plantain, Bracted Plantain, Broadleaf Plantain, Broadleaf Signalgrass, Browntop_Millet, Buckhorn Plantain, California Burclover, Canada Thistle, Canada_Toadflax, Carolina False Dandelion, Carolina_Dichondra, Carpetgrass, Carpetweed, Catsear Dandelion, Chamberbitter, Common Chickweed, Common Lambsquarters, Common Millet, Common Plantain, Common Purslane, Common Ragweed, Common Sunflower, Common Vetch, Common Waterhemp, Corn Speedwell, Creeping Beggarweed, Creeping Charlie, Creeping Speedwell, Curly Dock, Cutleaf Evening Primrose, Dallisgrass, Dandelion, Dollarweed, Doveweed, Eastern Black Nightshade, Entireleaf Morningglory, Fall Panicum, Field Madder, Field Pepperweed, Field Sandbur, Field Violet, Fireweed, Florida Betony, Florida Pusley, Giant Foxtail, Giant Ragweed, Gophertail Lovergrass, Green Foxtail, Green Kylinga, Hairy Bittercress, Hairy Nightshade, Heartwing Sorrel, Heath_Aster, Hemp Sesbania, Henbit, Hop Medic, Horse Purslane, Horseweed/Marestail, Indian Chickweed, Ivyleaf Morningglory, Johnsongrass, Knawel, Ladys Mantle, Lawn Burweed, Mouseear Chickweed, Narrowleaf Plantain, Oxeye Daisy, Paleseed Plantain, Palmer Amaranth, Parsley Piert, Pennsylvania Smartweed, Pennywort, Pitted Morningglory, Pokeberry, Poorjoe, Prickly Sida, Proso Millet, Prostrate_Knotweed, Purple Cudweed, Quackgrass, Rabbitfoot Clover, Red Fescue, Red Sorrel, Redroot Pigweed, Rescuegrass, Russian Pigweed, Shattercane, Shepherdspurse, Sicklepod, Slender Aster, Spiny Sowthistle, Sprawling Horseweed, Stinkgrass, Swinecress, Switchgrass, Tall Fescue, Tansy Mustard, Texas Panicum, Thin Paspalum, Trampweed Facelis, Velvetleaf, Venus Looking Glass, Virginia Buttonweed, Virginia Dwarf Dandelion, Western Ragweed, White Clover, White Mustard, White Sweet Clover, Whiteleaf_Sage, Wild Buckwheat, Wild Carrot, Wild Garlic, Wild Lettuce, Wild Oats, Wild Onion, Wild Pansey, Yellow Foxtail, Yellow Rocket, Yellow_Woodsorrel, Dogfennel, Ground Ivy |
| Time to Kill | The soil activity of Celsius WG Herbicide provides a barrier of control for up to 60 days after the application is made. |
| Chemical Type | Herbicide |
| Formulation | Water Dispersible Granule (WDG) |
| Application Methods | Broadcast Spray, Spot Treatment |
| Product Drawbacks | Spot treatments of Celsius WG Herbicide ,to St. Augustine grass at turf temperatures of 90 degrees or higher may cause temporary growth regulation. This product can also affect some ornamentals and is not recommended for use near the roots or newly plants |
| Active Ingredient | Thiencarbazone-methyl 8.7%, Iodosulfuron-methyl-sodium 1.9%, and Dicamba 57.4%. |
| Application Equipment | Backpack Sprayer, Pump Sprayer |
| Mix Rate | For spot treatments, mix 0.057 to 0.113 oz. (1.6-3.2 g) of Celsius WG Herbicide per gallon of water per 1,000 sq. ft. |
| Use Sites | Outdoors |
| Yield | 10 oz. of Celsius WG Herbicide will cover up to 5 acres. |
| EPA Registration No. | 101563-141 |
| Comparable Products | Monument 75 WG |
| Children or pets? | No |
| Property Characteristics | None |
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