Celsius WG Herbicide

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Starting at $20.50

Grouped product items
Product Name Price/Ea. Quantity
Celsius WG - 0.226 oz
Celsius WG - 0.226 oz
  • Buy 2 for $19.50 each and save 5%
Celsius WG Herbicide -10 ounce
Celsius WG Herbicide -10 ounce
  • Buy 2 for $161.50 each and save 5%
Total: $0.00

Pro Tips
Pro Tips & Quick Tricks

Celsius is designed to use on warm-season turf during hot weather- just when you usually need it the most. To help penetrate the natural waxy tissue barrier of plants, Celsius can be mixed with a surfactant such as Alligare Surface Nonionic Surfactant

Product Information

Celsius WG Herbicide - Warm SeasonTurf Types

Celsius WG Herbicide got it's name from "Celsius (°C) ", temperature degree. Unlike other herbicides, Celsius WG can be applied when the weather is unbearably hot, even when temperatures exceed 90 degrees (reducing risk of phytotoxicity).

As a post-emergent herbicide, it works very well on southern grasses such as St. Augustine, without fear of damaging turf.

Celsius WG is a selective herbicide providing a broad spectrum of weed control with it's three active ingredients.

How does Celsius WG work?

Weeds quit growing within a few hours, by a combination of active ingredients that not only stop the weed growth by inhibiting weed growth, but combines with an ingredient that reduces the probability of resistance. Look for a yellowing or reddening/purpling to necrosis that will control the weeds within 1-4 weeks. The speed of weed control will vary with temperature and will be faster at warmer temperatures, or the soil is adequately moist for weed growth.

Weed control may be reduced if application occurs during heavy dew, fog, and mist/rain or when weeds are under stress due to drought.

Top Celsius WG Herbicide Benefits

    • Safe for use year round on many warm-season turf types.
    • Celsius controls more than 150 weeds including many difficult-to-control broadleaf and grassy weeds.
    • The soil activity of Celsius provides a barrier of control for up to 60 days after the application.

EPA Reg. No. 432-1507

Celsius WG Herbicide Cautions:

Do not use Celsius WG on cool season grasses including fescue, bluegrass, ryegrass or bentgrass.

Application Tips:

To help penetrate the natural waxy tissue barrier of plants, use a surfactant such as Alligare Surface Surfactant

Damage to sensitive non-targeted plants can occur as a result of spray drift. Use of a marking dye to see where you have applied Celsius WG Herbicide will help avoid injury to non-target plants.

Packaging 0.226 oz (6.4 grams) and 10 oz.
Product Label Label
More PDF's N/A
Target Pest

Over 150 Annual and Perennial Broadleaf Weeds and Grasses:
Controls Annual and Perennial Grasses and broadleaf weeds in warm-season grasses (Bermudagrass, Zoysiagrass, and Buffalograss etc.)

Broadleaf weeds:
American burnweed, chamberbitter, common purslane, dollarweed, Florida betony, Florida pusley, lawn burweed, Lespedeza, prostrate spurge, spotted spurge, Virginia buttonweed

Grassy weeds:
Bull paspalum, carpetgrass, Dallis grass (suppression), doveweed, large crabgrass


See label for a full list

Active Ingredient (s) Thiencarbazone-methyl 8.7% Iodosulfuron-methyl-sodium 1.9% Dicamba 57.4%
For Use :

Residential lawns, commercial lawns, golf courses, sports fields, parks, campsites, recreational areas, residential lawns, roadsides, school grounds, cemeteries, and sod farms to control annual and perennial broadleaf weeds and grasses in warm-season turf types listed on this label (St. Augustinegrass, Bermudagrass, Centipedegrass, Zoysiagrass).


Do not use Celsius WG on cool-season grasses including fescue, bluegrass, ryegrass, or bentgrass.

Yield Up to 2 acres of land for grassy and broadleaf weeds.
Mixture|Application For spot applications, add the specified product rate of 0.057-0.113 oz to 1 gallon water. One gallon of spray solution will treat up to 1,000 sq ft.
Refer to the label.

Dilution rates vary.

  • Low rate is 0.057 oz. or 1.6 grams per gallon water
  • Middle rate is 0.085 oz. or 2.4 grams per gallon water
  • High rate is 0.113 oz. or 3.2 grams per gallon water
  • For top results to control mature weeds, apply when the daily average temperature is above 60° F.
  • Do not mow immediately after treating grasses with Celsius. Apply Celsius when dew, fog, mist, and rain are not present.


Use a spot treatment application of Celsius WG Herbicide for controlling specific areas of sensitive weeds. For spot treatments, mix 0.057-0.113 oz (1.6-3.2 g) of Celsius WG Herbicide per gallon and apply until weeds are wet. One gallon of spray solution will treat up to 1000 sq ft. For difficult-to-control weeds, such as Virginia buttonweed or dollarweed, make a second application when re-growth is observed. Do not exceed 0.17 oz (4.8 g) of product per 1000 sq ft in a calendar year.

Retreatment Do not apply more than a total of 7.4 oz (210 g) of product per acre (0.17 oz or 4.8 g of product per 1,000 sq ft) per year (365 days).
Shipping Restrictions AK, CA , NY
More Instructions

Do not use Celsius WG on cool season grasses including fescue, bluegrass, ryegrass or bentgrass.


Two of the three active ingredients in Celsius WG Herbicide (thiencarbazone-methyl and iodosulfuron-methyl-sodium) inhibit acetolactate synthase (ALS). ALS is responsible for the synthesis of essential amino acids that are essentia for plant growth. Inhibition of these amino acids stops weed growth. Some weed species, however, have naturally occurring biotypes that are resistant to ALS-inhibiting herbicides.

Resistant weed populations may occur when ALS herbicides are used year after year. To add to the weeds controlled and provide resistance management, Celsius WG Herbicide also contains dicamba, a benzoic acid herbicide that acts on the same biochemical site as the natural plant auxin, indole acetic acid (IAA). Having several herbicides with different modes of action (MOA) reduces the probability that resistant biotypes to Celsius WG Herbicide will develop.


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