SpeedZone Southern Herbicide

$86.95 - $191.95

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4.5 out of 5 stars Rating: 4.4

25 Reviews | 56 Q&A

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{ $86.95 { $84.95 $191.95 $189.95
  Size/Description Price/Ea. Qty
SpeedZone Southern Herbicide gallon (128 oz)

Buy 1: $86.95 each

Buy 2 or more: $84.95 each

$86.95
SpeedZone Southern Herbicide - 2.5 Gallons jug (2.5 gal)

Buy 1: $191.95 each

Buy 2 or more: $189.95 each

$191.95
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SpeedZone Southern Herbicide

Speedzone Southern is a selective post-emergent herbicide that provides excellent and fast broadleaf weed control in sensitive southern turf grasses. SpeedZone Southern controls tough weeds such as dollarweed, creeping beggarweed, clover, plantain, ground ivy and spurge with a fast-acting response time. You will see weeds start reacting within hours. Speedzone is also rainfast within 3 hours, meaning it will stay on weeds even if it rains the night after you spray. SpeedZone Southern is labeled for use on grasses such as Bahiagrass, Buffalograss, centepedegrass, Hybrid Bermudagrass, Common Bermudagrass, Kikuyugrass, Seaside Paspalum, St. Augustine and Zoysiagrass.




Speedzone Southern is a post-emergent herbicide that provides excellent and fast broadleaf weed control in sensitive southern turf grasses. SpeedZone Southern controls tough weeds such as dollarweed, creeping beggarweed, clover, plantain, ground ivy and spurge with a fast-acting response time.  You will see weeds start reacting within hours. Speedzone is also rainfast within 3 hours, meaning it will stay on weeds even if it rains the night after you spray. SpeedZone Southern is labeled for use on grasses such as Bahiagrass, Buffalograss, centepedegrass, Hybrid Bermudagrass, Common Bermudagrass, Kikuyugrass, Seaside Paspalum, St. Augustine and Zoysiagrass.

Rating Snapshot

5 stars   18
4 stars   4
3 stars   0
2 stars   2
1 star   1

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Average Customer Rating
4.5 out of 5 stars (25)

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Most Helpful Customer Reviews
  • 20 of 20 people found this review helpful:

    5 of 5 stars  Speed Zone Southern
    By Jim in Virginia Beach, VA on 04/27/2012
    Verified Purchase

    My yard, approximately 3/4 acre, consists mainly of St. Augustine/fescue and was heavily infested with a variety of different weeds due mainly to lack of previous treatment (St. Augustine very sensitive to most herbicides). Mixed and applied SZS in accordance with directions at a rate 1.5 fl oz mixed in 2 gal. quantities per 1000sf. Positive results noticed within 2 days with approximately 98 percent positive results in 2 weeks (as advertised). Surprisingly, same species of weeds responded with a less positive results during same time periods. This may be due to uneven application caused by varying pump pressure as chemical was distributed. Distribution was performed using a hand pressurized fan sprayer with a 2 gal capacity. Little or no turf damage observed.

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  • 16 of 16 people found this review helpful:

    5 of 5 stars  Very effective stuff
    By Alex in Cral Srings, FL on 01/14/2014

    I'm a first time homeowner in South Florida. Being such when I purchased my home I didn't have the slightest clue that there are things called weeds that slowly choke and take over your grass if left untouched. 4 years later my lawn was a mess. But in those four years I have grown to be an adept do it yourself homeowner. So after sodding about 25% of my lawn that was completely choked with weeds, I had to figure out how to get rid of the weed in the other areas. Most of which was anywhere from 40-65% weed mixed with grass. I also had some of the toughest weeds to kill. The toughest one was the creeping beggar weed. I didn't find anything from my research that treated it effectively without killing grass. And believe me I did a ton of research down to what’s the best method of getting rid of each individual type of weed in my lawn. After about 2 weeks of fruitless searching I found a website mentioning this herbicide as being extremely effective. So I bought and then applied it per the instruction and after just one application my yard is now only 10-20% weed! This stuff is AMAZING!! Killed 4 years of weed in just one application! Furthermore, my grass stayed completely green without any negative effect from the herbicide (St. Augustine) I was hesitant to buy it at first because of the price but it’s completely worth it. Also there's enough herbicide here to last you anywhere from 3-5 years so in the long run its cheaper than most of the stuff you will buy at home depot. In fact comparing this to even the best thing home depot has to offer is like comparing an NFL team to a high school team. If you have the types of weed that this herbicide is designed for just stop searching for anything else and buy this. If you use it correctly it will destroy your weed without harming your grass.

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  • 11 of 12 people found this review helpful:

    5 of 5 stars  Speedzone Southern
    By Dave in Ponte Vedra Beach, FL on 05/24/2011
    Verified Purchase

    Great Stuff. Killed the dollar weed but not my St. Augustine grass.

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  • 8 of 9 people found this review helpful:

    5 of 5 stars  Invasive groundcover in FL
    By David in Pensacola, FL on 05/16/2012

    This was recommended by Ag Serv. as only herbicide to rid my FL panhandle yard of the dreaded: Tradescantia fluminensis- Common Names: green wandering Jew, small leaf spiderwort, white-flowered wandering Jew, inch plant, speedy Jenny. Which is a class 1 invasive species. It works..but the plants are so resilent..you have to keep at it..recommend this product for this species.

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  • 8 of 8 people found this review helpful:

    5 of 5 stars  It worked!
    By in York, SC on 06/06/2013
    Verified Purchase

    Got the Speedzone Southern Herbicide, sprayed it on as per the instructions and it quickly went to work. Took about 2 days for the burr weed to start dying. It is all gone now and two weeks later the Bermuda is coming in strong that the burr weed had been choking out before. Good stuff Thanks.

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Most Recent Customer Reviews
  • 5 of 5 stars  Dollar weeds
    By Bob in Ponte Vedra Beach Florida on 07/18/2017

    Had problem with dollar weeds in my beds, were getting taller then some of the plants. One application of this and 6 days later they appear to be dead, killed several other weeds. Will try this in the St Aug grass when temps cool down below 85. So far very happy with results.

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  • 1 of 1 people found this review helpful:

    5 of 5 stars  Effective against wild violet
    By Meredith in Decatur, GA on 06/12/2017

    I have been trying without success to control the wild violets taking over my lawn. Other products would not phase the weed, where others would turn the leaves yellow but not kill it. But, SpeedZone Southern herbicide has done what other herbicides could not. I am pleased with this product.

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  • 5 of 5 stars  Worked Great
    By David in LaGrange, GA on 06/08/2017

    Tried several products from the box stores, none worked on the creeping beggar weed. SpeedZone worked great with one application.

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  • 4 of 5 stars  caution when using
    By Victor in Loris SC on 04/23/2017

    Be careful what time of year you choose to use it. DO NOT USE when grasses are in transition, it will cause clubbing. Can not use on freshly laid sod. It's an awesome herbicide when used with celsius and a sticker, but don't use a sticker when temps reach above 85.

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  • 1 of 1 people found this review helpful:

    2 of 5 stars  Not as effective as expected
    By Daniel in Ladson, SC on 03/15/2017

    After sprayed it and a couple of weeks later the effectiveness of this thing killings weeds would be at 30%!, too low for the price

    Expert Response   Expert response:
    Thank you for your comments! We are sorry that you did not get the desired results from using the Speedzone. Keep in mind that more mature plants or late-summer or fall weeds may require multiple applications of post-emergent herbicides. If you would like to tell us more about what specific weeds you are targeting, then we would be happy to troubleshoot with you. We appreciate your feedback and your business!

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  • 5 of 5 stars  Speedzone
    By Tom in Irvington, Al on 06/07/2016

    I was doubtful as I have tried Image and other products to eliminate Dollar weed with no luck. I applied Speedzone at a rate of 1 1/2 oz per gallon. 10 days later the dollar weed is gone and grass looks great.

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  • 5 of 5 stars  Works great
    By Mark in Tallahassee FL on 03/19/2016

    I put SpeedZone Southern out early in the season. Probably too early but I had a lot of weeds. I watched it for a couple of days but saw no results. After a couple of weeks the weeds started turning brown and dying. In time it worked great but I really think if I had waited until spring officially began it might have worked even faster.

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  • 1 of 1 people found this review helpful:

    5 of 5 stars  Quicker than you think
    By B in Valdosta, GA on 01/19/2016

    Proven winner for Southern turf. Kills broadleaf weeds faster than the rest. The added ingredient Carfentrazone is the key to the "Speed" Follow the instructions, use the proper equipment, and watch the weeds die.

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  • 3 of 3 people found this review helpful:

    5 of 5 stars  No Bull.
    By S. in Hertford, NC on 08/09/2015

    I've struggled with beggar weed in our zoysia grass for several years. I tried the usual "weed selective" Ortho's Weed Be Gone sold through the warehouse stores to no avail. For that matter, it's totally disappointing at removing most any weed to include even a dandelion. I then studied Do My Own Pest Control's web site and learned of SpeedZone Southern Herbicide. Good stuff! Does what a selective weed killer is suppose to do. A little pricey but you get a large quantity that will last for quite some time.

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  • 4 of 5 stars  Got rid of Japanese-Knot-Weed
    By Milc in MA on 06/21/2014

    Nothing worked well against Japanese-Knot-Weed until we found SpeedZone. We are glad we finally got rid of them. For other wide leaf weeds, I wish our State allows us to use the stronger one (red label).

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Most Helpful Q&A's

02/23/2013 Jesse

QHow much SpeedZone Southern Herbicide do I mix with one gallon of water?

A

You will need to use .55 fl oz -1.5 fl oz per 1,000 sq ft. Please refer to the product label fro the correct usage rate for your needs.

Note: Sprayer calibration (volume of spray needed to treat 1,000 square feet) will vary with each individual operator.
Steps in Calibration:
1. Mark an area of 1,000 square feet (i.e. 20 by 50 feet or 25 by 40 feet).
2. Place the sprayer on a level surface and add water noting the final level of water in the spray tank.
3. Spray the marked area with a sufficient volume of water to provide uniform coverage. Refill the sprayer to the same level as before measuring the amount of water added. The measured water added to the sprayer is the volume needed to cover 1,000 square feet.
4. Determine the application rate (fl. oz./1,000 sq. ft.) for Speedzone Southern from the Recommendations section of this label.
5. To each volume of water used as measured in step 3, add the amount of Speedzone Southern as determined in step 4.
Example: If the sprayer uses 2 gallons of water to cover 1,000 square feet and the desired application rate of Speedzone Southern is 1.5 fluid oz./1,000 square feet, then you would add 1.5 fluid ounces of Speedzone Southern to every 2 gallons of water to be used."

31 of 52 people found this answer helpful.
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04/13/2015 Barbara from Costa Mesa, Ca

QMy dog ate grass with this on it and threw up - is she in danger of something bad?
How long do I have to wait before I can walk my dogs on grass treated with this?

AThe SpeedZone Southern Herbicide label states that once the product is dry, it is safe for pets to re-enter the treated area. Normally, an animal would have to consume a large amount to be affected by the herbicide. If you have any concerns, we recommend you contact your Vet and the manufacturer PBI Gordon at 800.821.7925 for clarification. 

19 of 19 people found this answer helpful.
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05/11/2012 Sara from Alma, Ga

QCan speedzone southern be used on centipede grass after temperatures reach above 90 degrees?

AAccording to the Speedzone Southern product label you are prohibited from broadcast spraying when temperatures reach 85F degrees or above and spot treatments may cause injury as well when temps reach 85F degrees.

16 of 19 people found this answer helpful.
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09/04/2010 Robert

QCan you use SpeedZone Southern Herbicide on Floratam Grass?
We have spotted spurge and many say not to use SpeedZone Southern Herbicide on our Floratam grass.

ANo, SpeedZone Southern Herbicide cannot be used on Floratam grass. You should contact your local cooperative extension office for advice on the Floratam grass.

12 of 14 people found this answer helpful.
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10/23/2013 Dave from Tampa, Florida

QBest weed killer for Dollar Weed?
I have a St Augustine lawn in Florida and have not been able to get rid of the Dollar Weed. What do you recommend?

ASpeedzone Southern is labeled for Dollarweed and for use on St Augustine grass. According to the Speedzone Southern product label: The turf tolerance to this product may vary and temporary turf grass yellowing may occur on St Augustine. Do not apply Speedzone Southern to Floratam, Bitterblue or other improved species of St Augustine. Do not broadcast or spot spray St Augustine during the fall to winter transition or if temperatures are expected to fall below 40F within 10 days of the application.

Please take a few moments to read through the product label completely for full instructions and other precautions.

11 of 21 people found this answer helpful.
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Most Recent Customer Questions

09/25/2017 Jayson from Bakersfield, California

QIf I spray my Bermuda with SpeedZone Southern Herbicide can I apply winter rye in 2 weeks?

A

The SpeedZone Southern Herbicide label states that reseeding can be done 1 week following the application. 

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09/04/2017 Ed from Underhill, Vt

QWhat setting do I use for my Ortho Garden Hose Sprayer using SpeedZone Southern Herbicide?
The setting range from 1 tsp to 8 oz. I can't find a mix rate for using hose water to spread on lawn.

A

Post-emergent herbicides are not recommended to be used in a hose end sprayer because those sprayers are not accurate enough to apply the correct amount of SpeedZone Southern Herbicide. You will need to use a hand pump sprayer and uniformly spray the product over the specified area. To decide how much water you want to use, you should mark a 1,000 sq ft area, fill your sprayer with water ONLY, and start walking and spraying just as if you were doing the actual application of herbicide. When you are done walking and spraying the 1,000 sq ft area note how much water it took you to spray that area, and that is the amount you will want to mix  of product with for each 1,000 sq ft area that needs to be treated.  The rate you would then use depends on your lawn type, please refer to the product label for complete instructions.

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07/06/2017 Brandon from Hamlet, Nc

QWhen is the best time to apply SpeedZone Southern Herbicide during summer?
Can I do it in the morning or evening and be ok? The day temp 95. The label says not to apply when the temp is above 85.

A

SpeedZone Southern Herbicide is best applied when temperatures are below 85 degrees.  It is recommended to apply earlier in the morning when temps are lower.

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07/05/2017 Bn from Somerset, Wi

QWhat happens if Speedzone Southern Herbicide gets on edible vegetation?

A

If SpeedZone Southern Herbicide was applied to edible vegetation, then you would need to discard the contaminated crops.  It would not be safe to consume anything that this product came into contact with. 

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06/26/2017 Gary from East Meadow, Ny

QHow often can I use Speedzone to get rid of clover and not hurt my lawn?

A

SpeedZone Southern Herbicide has a maximum application of 2 times per year as directed on the product label.

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06/21/2017 Dom from Ny

QHow long should I wait after applying SpeedZone Southern Herbicide to lay sod?

A

You may reseed areas treated with SpeedZone Southern Herbicide 1 week after treatment, per the product label. If you are planning to lay fresh sod, then we would recommend waiting until treated plants have died and been removed from the treated area before laying fresh sod. Be sure you are using the correct rates for your turfgrass.

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06/14/2017 Michael from Aurora

QHow much time for the SpeedZone Southern Herbicide to penetrate the weeds after spraying?

A

You will see weeds start reacting within hours. Speedzone is also rainfast within 3 hours, meaning it will stay on weeds even if it rains the night after you spray.

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05/03/2017 Mary from Fort Walton Beach, Fl

QCan I use SpeedZone Southern Herbicide on my St Augustine lawn that has been invaded by Oxalis?
It has a purple flower. Speedzone seems to injure oxalis, but it's still popping up. I've not used dish soap in the past - is it okay to add to Speedzone to make it stick better?

A

Per the label instructions for SpeedZone Southern Herbicide it is not necessary to add any type of adjuvant to SpeedZone Southern as it is already designed for rapid penetration and uptake.  All adjuvants including surfactants, spreader stickers, detergents etc. will change the physical and biological properties of this product, which are often antagonistic, and show no significant influence on efficacy. SpeedZone Southern Herbicide is a post emergent which will kill the weeds that have emerged, it will not prevent weeds from growing.

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05/02/2017 Ken from Easley, Sc

QHow soon after applying SpeedZone Southern Herbicide can I mow my lawn?

A

You want to delay mowing at least 2 days after application or two days prior to application of SpeedZone Southern Herbicide.

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04/24/2017 Marty from Spring Lake

QHow ofter should I apply SpeedZone Southern Herbicide to my lawn?

A

SpeedZone Southern Herbicide can be applied up to 2 times per year with a mininum of 30 days between applications.

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