Certainty Herbicide can be used anytime weeds are actively growing and should not harm the Bermuda when used as directed on the product label.
Yes, Certainty Herbicide is labeled to eradicate burweed. Please refer to the product label for complete mixing and application instructions.
Certainty Herbicide is labeld for control Poa Trivialis but Certainty Herbicide is a post emergent herbicide that requires the target weeds to be actively growing in order for the Certainty Herbicide to kill or supress it.
According the the product label on Tenacity Herbicide, there has not been any testing on whether there are any issues with it being mixed with Certainty Herbicide or not. The manufacturer recommends doing a test on a small basis for compatibility. According to the Certanty Herbicide product label you would need to add water to the tank, then Certainty, then the Tenacity for the best mixture.
The amount of Certainty needed will depend on the type of weed you are trying to control and the amount of water you use will vary as water only acts as the carrier and is not set on amount of product per gallon of water. The rate range is 0.75 to 2.0 oz per acre mixed in 10 to 50 gallons of water per acre. The included scoop is generally the way to measure, but you can use another larger utensil (dedicated for this use or disposable) if desired.
Certainty Herbicide is really the only selective herbicide that will treat Johnsongrass in Bermuda,
Certainty Herbicide is labeled to suppress dallisgrass in bermuda but may not kill it completely. Several applications would likely be necessary.
Certainty Herbicide would be a great post emergent herbicide to use for poa annua in centipede.
Certainty Herbicide like most other herbicides should not be applied in hose end applicatiors. This type of sprayer sometimes is not very accurate, so you can wind up dispensing more/less product than needed in a given area, which can lead to less than desirable results.
3 - 5 small scoops or 1 - 2 large scoops per gallon of water per 1,000 sq. ft.
* Use a Surfactant to Increase Effectiveness
* See label for complete application instructions
Certainty Herbicide - 1.25 oz. can be tank mixed with Pendulum 3.3 EC following each labeled instructions and rates. Certainty would be added first than the liquid herbicide. Before tank mixing, a simple jar test is recommended to insure compatibility of herbicides as directed on the label.
Certainty Herbicide is labeled to suppress dallisgrass in bermudagrass as directed on the product label. To prevent it coming back you would use a pre-emergent herbicide such as the Dimension 2EW.
We normally recommend Certainty for johnsongrass control. Please check the product label to be sure your turf grass type is tolerant.
According to the product label, you should wait at least 3 weeks before re-seeding or over-seeding after using Certainty Herbicide.
Certainty Herbicide is labeled to kill lawn burweed which is often called sandbur, but is not labeled for bindweed.
Certainty Herbicide should be applied when the burweed is actively growing and healthy. Usually weeds are best controlled when they have just emerged. Please contact your local cooperative extension office to determine the more exact timing of the application as this will vary greatly from region to region.
Certainty Herbicide does list on the label that it is safe around many woody ornamentals so it should not harm a healthy tree.
Certainty Herbicide - 1.25 oz. is not labeled to control goosegrass.
Unfortunately, there has not been any testing done by the manufacturer of Tenacity on the compatibility of tank mixing Tenacity Herbicide and Certainty Herbicide. We would suggest doing a small compatibility test in glass jar to see if the products separate or clump in any way. The Certainty Herbicide product label advises to add water to the tank ½ way then add the Certainty first and then the Tenacity, shake vigorously and fill the remaining way with water and shake again.
