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Hi-Yield Atrazine Weed Killer controls Henbit, Dollarweed, Chickweed, Clover, Sandspur and others listed on label. Hi-Yield Atrazine Weed Killer controls both emerged weeds and weeds from seed in St. Augustine and Centipedegrass. Hi-Yield Atrazine Weed Killer controls tough weeds.
Product Documents
| Active Ingredient | Atrazine 4% |
|---|---|
| Target pests |
Henbit, Moneywort, Pennywort (Dollarweed), Chickweed (Common and Mouseear), Spurge, Annual Bluegrass (Poa annua), Dichondra, Knotweed, Cudweed, Florida Betony, Lespedeza, Mustards, Narrowleaf Vetch, Parsley-Piert, Sandspur, Smutgrass, Spurweed, Swinecrest, Woodsorrel and Various Annual Clovers * Supresses Crabgrass |
| For use in | St. Augustine and Centipede grass |
| Application |
5 tsp. per quart of water per 100 sq. ft. 8.8 oz. per 2 gallons on water per 1,000 sq. ft. * See label for complete application instructions |
| Pet safe | Yes, if used as directed on Label |
| NOT FOR SALE TO | AK, AZ, CA, CO, CT, DC, DE, HI, IA, ID, IL, IN, KS, KY, MA, MD, ME, MI, MN, MT, ND, NE, NH, NJ, NM, NV, NY, OH, OR, PA, PR, RI, SD, UT, VT, WA, WI, WV, WY |
| Shipping Weight | 2.31 lbs |
| Manufacturer | VPG (Mfg. Number: 33430) |
| UPC | 732221334304 |
| EPA Registration | 19713-567-7401 |
Weeds Controlled or Suppressed:
Annual Bluegrass (Poa annua), Chickweed (Commonand Mouseear), Crabgrass (suppression only), Cransbill, Cudweed, Dichondra, Florida Betony, Henbit, Knotweed, Lespedeza, Moneywort, Mustards, Narrowleaf Vetch, Parsley-Piert, Pennywort (Dollarweed), Sandspur, Smutgrass, Spurge, Spurweed, Swinecrest, Woodsorrel and various annual clovers.
Established St. Augustinegrass and Centipedegrass:
This may be applied during both dormant and growing seasons. Best results are usually obtained when applied in early Spring or dormant periods when weeds are small or have not emerged. Do not apply more than two treatments per year. This controls Spurweed, Florida Betony, Annual Bluegrass and many other problem weeds in St. Augustinegrass and Centipedegrass turfs. This will control both emerged weeds and weeds from seeds. Rain or water within 2 or 3 days of application may decrease the effectiveness on emerged weeds. However, for the control of weeds from seeds, rainfallor watering is necessary within 7 to 10 days after treatment.
Spurweed:
Control of Spurweed can best be obtained by applying when Spurweed has newly emerged(December and January.)
Florida Betony:
This weed emerges in the Fall. Apply this product in mid to late October followed by a second application in mid to late February.
Dichondra, Moneywort:
Apply this product in early April followed by a second applicationin July. Note: Applications for Spurweed or Florida Betony generally will give control or suppression of the other listed weeds. However, as a general rule, this product will give best control when applied to young tender weeds or just prior to weed emergence.
WARNING: This product can expose you to chemicals including Atrazine, which is known to the State of California to cause birth defects or other reproductive harm. For more information go to https://www.P65Warnings.ca.gov
Trying to kill Pennywort
By Gary on 05/30/2012
Verified Purchase
I sprayed the Atrazine as directed and it didnt kill the Pennywort. I waited a week and a half and sprayed some areas again and also some new areas. After another 2 weeks and a couple of rains I noticed some of the Pennywort was dead, but much of the grass around the sprayed areas was dead as well. In general, it killed more grass than Pennywort.
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67 of 77 people found this review helpful
Atrazine
By John on 12/29/2014
Verified Purchase
Doesn't seem to be working so well. Thought it worked on st. Augustine grass. weeds are still there and don't seem to be dying
Expert response:
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57 of 62 people found this review helpful
Really a weed killer
By Andres on 02/04/2015
Verified Purchase
After fighting with a pest control service for months without results, and my front grass getting worse, I decide to try Atrazine which they said they wouldn't apply. It worked nicely and even in the winter months I cant see any sign of getting back in the weeds. I took my pest control in my own hands and I hope to use many more products as time goes by.
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55 of 57 people found this review helpful
Atrazine weed killer
By O. on 05/07/2014
Verified Purchase
ZERO
By Paul on 05/28/2012
Verified Purchase
Which one of these is the best grab grass killer but will not harm my saint Augustine grass. Thank you
Hi-Yield Atrazine Weed Killer would be the product to use on St Augustine. Spectracide Weed Stop for Lawns Plus Crabgrass Killer Concentrate states Do not apply to St Augustine on the product label. It contains Quinclorac which St Augustine is not tolerable to.
Henbit and goat head around pecan trees
Applications of Hi-Yield Atrazine Weed Killer would need to be kept outside of the dripline of any nut trees.
You could consider carefully spot treating the weeds with a product such as Avenger Weed Killer Concentrate, which is a non-selective herbicide, made from the rind of oranges to control most annual grasses, weeds and broadleaf. Be sure to avoid any contact with the trees themselves or exposed roots.
Hi-Yield Atrazine Weed Killer should not be applied near, on or around ornamental plants and flower beds. It should only be applied as directed to actively growing weeds in established Centipede and St. Augustine lawns.
Hi-Yield Atrazine Weed Killer is not labeled to control spear grass. Unfortunately there is not much information on how to control this grass. You may either consider spot treating with a non-selective such as Roundup QuikPRO - 5 x 1.5 oz. packs or double checking with your extension office to see if they know of anything else that may work
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1 of 1 people found this answer helpful
After applying Atrazine to a lawn area that was overrun with weedsl That area is now bare. When can I reseed with centipede seed or lay down centipede sod. Could I do either if I first put down some top soil. Please advise me as to options. Thank you very much.
Per the product label Do not overseed turf areas within 6 months of treatment of Hi-Yield Atrazine Weed Killer.
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0 of 1 people found this answer helpful
Rather than tap water
Mixed Hi-Yield Atrazine Weed Killer should be used within a 24 hours of mixing with any type of water as it starts to break down after that time. There is no ingredient in the product to hold it in solution longer.
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2 of 2 people found this answer helpful
Hi-Yield Atrazine Weed Killer will suppress crabgrass, but it may not completely control it with one application, it can take multiple treatments. The best time to treat for post-emergent control is when the weeds are young and actively growing, usually when temperatures are between about 55 and 85 degrees. Please refer to the product label for a complete list of plants controlled and for full application directions. You will want to apply spring and fall pre-emergent herbicide applications to prevent many broadleaf and grassy weeds from germinating. Here is a great article on crabgrass treatment and prevention as well as one for centipede turf care.
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1 of 1 people found this answer helpful
While it is safe to apply Hi-Yield Atrazine Weed Killer to fully dormant St.Augustine grass, it is not labeled to control rye grass. Sertay Herbicide (Generic Certainty can be used to control perennial ryegrass.
Hi-Yield Atrazine Weed Killer is best applied to a dry lawn but a slight amount of dew is okay as long as not dripping wet.
Yes, Hi-Yield Atrazine Weed Killer can inhibit seed growth of turfgrass, you cannot seed treated areas for at least 6 months after application.
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0 of 1 people found this answer helpful
Hi-Yield Atrazine Weed Killer is only safe on established lawns. Lawns are considered established once they been mowed 3 times.
I don't want to kill the pompous grass
Hi-Yield Atrazine Weed Killer is a product that can only be used on St. Augustine and Centipede grass. It will harm cool-season lawns or other grasses so depends on the type of turfgrass you have.
Hi-Yield Atrazine Weed Killer
Rating: 3.4 (58 Reviews / 175 Q&A)
