Need a solution for the weeds taking over your Bermuda, Zoysia, or St. Augustine lawn? Then look no further than the Celsius and Certainty herbicide kit! It combines 2 weed killers to form a potent combination. This herbicide combination kills weeds without killing your grass.
Kills over 180 weeds without damaging warm season grass.
Includes surfactant and dye for precise, effective application.
Covers up to 130,000 sq. ft. per complete kit.
In stock! Usually ships within 48 hours.
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Usually ships in 24 to 48 hours
Arrives by 3 -7 business days
Professional Results at Home
Description
This ultimate herbicide combination is designed specifically for warm season grasses and includes everything you need to effectively target a wide range of weeds without harming your lawn. The kit contains Celsius WG Herbicide, Certainty Herbicide, Hi-Yield Surfactant, and Blue Marker Dye—a powerful mix that’s safe to use across a broad temperature range. Together, Celsius and Certainty target and suppress over 180 grassy and broadleaf weeds, including:
American Burnweed
Bull Paspalum
Carpetgrass
Chamberbitter
Common Purslane
Dallisgrass (suppression)
Dandelions
Dollarweed
Doveweed
Florida Betony
Florida Pusley
Large Crabgrass
Lawn Burweed
Lespedeza
Poa Annua
Prostrate Spurge
Spotted Spurge
Virginia Buttonweed
Kyllinga (False Green and Fragrant)
Purple Nutsedge
Yellow Nutsedge
Globe Sedge
Annual Sedge
...and many more
This combination is ideal for Bermuda, Zoysia, and St. Augustine lawns—making it a go-to solution for serious lawn care.
What’s included?
Celsius can be used on the following grass types:
All Warm Season Lawns with exception of Bahiagrass
Labels:
Celsius WG 10 oz Product Label
SDS: Celsius WG Safety Data Sheet
Application: This is a professional formulation and should be applied from Battery-powered 4 gallon sprayer with TeeJet foliar spray tip. This herbicide is not to be applied via a hose-end sprayer.
When to Apply: Do not apply if temperatures are over 100F. If temps are that high, apply in the evening when they dip below 100F and elect to spot spray instead of blanket spraying.
Coverage:
Celsius can be applied at the low rate of .057 oz/1,000 sq ft or the high rate of .113oz/1,000 sq ft.
Low Rate Coverage up to 4 Acres.
High Rate Coverage up to 2 Acres.
(0.226) Single dose low rate treats up to 4000 sq ft.
(0.226) Single dose high rate treats up to 2000 sq ft.
Application tips:
Use a non-ionic surfactant with Celsius for best results. Non-ionic surfactant helps the herbicide stick to the weeds better.
Do not mow immediately after treating with this product or before spray has dried. After treatment, do not transfer clippings to non-target areas.
Application sites:
For use in Golf Courses, Sod Farms, Highways, Right-of-Ways, and similar Non-Crop areas, Ornamental Turf-grass (Residential & Commercial), Parks, Cemeteries and Athletic Fields
Additional Notes:
Some products may not be registered for sale or use in all states or counties and/or may have state-specific use requirements. This information is for reference only. It is the responsibility of the user to verify the product is registered and appropriate for use in a given state. Please check with your local extension service to ensure registration status and proper use.
How to use?
Celsius Certainty Kit can be used on the following grass types:
All Warm Season Lawns with exception of Bahiagrass
Labels:
Certainty Turf Herbicide Product Label
Hi-Yield Spreader Sticker Product Label
Application: This is a professional formulation and should be applied from Battery-powered 4 gallon sprayer with TeeJet foliar spray tip. These herbicides are not to be applied via a hose-end sprayer.
When to Apply: Do not apply if temperatures are over 100F. If temps are that high, apply in the evening when they dip below 100F and elect to spot spray instead of blanket spraying.
Coverage:
Celsius can be applied at the low rate of .057 oz/1,000 sq ft or the high rate of .113oz/1,000 sq ft.
Low Rate Coverage up to 4 Acres. (174,240 sq. ft)
High Rate Coverage up to 2 Acres. (87,120 sq. ft)
Certainty can be applied at the low rate of 3 small scoops / 1000 sq ft with mixed with 2 gallons of water.
Low Rate Coverage up to 1.66 Acres. (72,000 sq. ft)
High Rate Coverage up to 1 Acre. (43,560 sq. ft)
Application tips:
Use a non-ionic surfactant with Celsius Certainty Kit for best results. Non-ionic surfactant helps the herbicides stick to the weeds better.
Do not mow immediately after treating with this product or before spray has dried. After treatment, do not transfer clippings to non-target areas.
Application sites:
For use in Golf Courses, Sod Farms, Highways, Right-of-Ways, and similar Non-Crop areas, Ornamental Turf-grass (Residential & Commercial), Parks, Cemeteries and Athletic Fields
Additional Notes:
Some products may not be registered for sale or use in all states or counties and/or may have state-specific use requirements. This information is for reference only. It is the responsibility of the user to verify the product is registered and appropriate for use in a given state. Please check with your local extension service to ensure registration status and proper use.
Shipping & Return
PRICE INCLUDES SHIPPING
Shipping: United States Only.
Currently NOT shipping to:(AK, CA, CT, DC, HI, NY, VT WA). For AZ just a small shipping charge of $5.00 will be applied.
We can not ship to PO Boxes
Typically delivered in 3 - 7 business days.
Cancellations | Returns | Exchanges: All sales are final, no cancellations, returns, or exchanges
Kills weeds, not grass
Summer-safe weed control
Simple, effective herbicide
Pro results, easy use
Kills weeds, not grass
Summer-safe weed control
Simple, effective herbicide
Pro results, easy use
Kills weeds, not grass
Summer-safe weed control
Simple, effective herbicide
Pro results, easy use
Celsius + Certainty Kit: powerful weed control, zero guesswork
A complete, pro-grade solution to eliminate weeds—without damaging your warm-season lawn.
Controls 180+ broadleaf and grassy weeds
Kills sedges, spurge, and poa annua
Includes surfactant and dye for accurate application
Temperature-flexible safe for summer spraying
Works on Bermuda, Zoysia, and St. Augustine grass
Covers up to
130,000 sq. ft.
Kills weeds, not grass
Summer-safe weed control
Simple, effective herbicide
Pro results, easy use
Kills weeds, not grass
Summer-safe weed control
Simple, effective herbicide
Pro results, easy use
Kills weeds, not grass
Summer-safe weed control
Simple, effective herbicide
Pro results, easy use
Frequently Asked Questions
Which grass types are these herbicides safe for?
Celsius is safe for all warm season grasses other than Bahiagrass. Certainty is safe for all warm season grasses.
Does Celsius / Certainty need to be watered in?
No. Celsius / Certainty works via foliar uptake. Simply spray the weeds you're targeting and allow it to dry.
Can I apply granular fertilizer or CarbonizPN-G on the same day as Celsius / Certainty?
Yes. We recommend that granular fertilizer and CarbonizPN-G be applied before Celsius / Certainty.
Can I apply other liquids and Celsius / Certainty on the same day?
Yes. We recommend applying non-herbicide products like like biostimulants and Primo Maxx growth regulator prior to spraying Celsius / Certainty.
How long does it take for weeds to die after spraying with Celsius / Certainty?
It depends on the weed being targeted and temperature. Most weeds begin to yellow within 14 days of application.
Should I use surfactant with Celsius / Certainty?
Yes. For best results we recommend using a surfactant with Celsius / Certainty. The kit already includes surfactant.
Are there temperature restrictions with this product?
No. We don't recommend spraying your lawn with Celsius / Certainty when temperatures exceed 90F as temporary injury may occur.
How long should I wait before resuming mowing?
For best results do not mow 2 days before application and 2 days after. For example, if you plan to spray Celsius and Certainty on Saturday, your last mow would be on Thursday. You would resume mowing on the following Tuesday.
Premium Compost & Biochar Blend
Improves Soil Health Naturally
Enhances Water Retention
Safe for Lawns & Landscaping
Premium Compost & Biochar Blend
Improves Soil Health Naturally
Enhances Water Retention
Safe for Lawns & Landscaping
Premium Compost & Biochar Blend
Improves Soil Health Naturally
Enhances Water Retention
Safe for Lawns & Landscaping
hear from our happy clients
Discover what our satisfied customers are saying real stories, real results, and why they trust us for their lawn care success.
Customer Reviews
This combo is fantastic. I have recommended to several friends. I have used this the last two years and there is not a feed to be found in the yard. (And this yard was a DISASTER when we moved in two years ago. The owners hadn't watered in months in the Texas summer.)
My friends call my lawn "the driving range." Thanks for introducing me to this combo.
I bought the kit to use on my Bermuda lawn, it’s been 1 week & 2 days since application. Most of my weeds are turning yellow, purple and I had no idea there was that much weeds mixed in my Bermuda because I’ve got plenty of of red\brown spots now. Good products.
This is my problem but it’s nothing to do with the setup, The only issue is that I am a regular dude who didn’t know all the weeds I had. Turns out my my problem is a weed called Goosegrass which these products don’t kill but I’ve on the look out for a product that will.
Just a little tip for anyone else, be sure to know what weeds you want to kill before spending the cash otherwise you’ll have to much fun spending more money on creating your own herbicide department in the garage.
Very good
Thanks for the feedback Raed!
Very good
Its a bit pricey but it works and the amout you will be using will last you for a long time.
Thanks for the feedback Carlos!