Certainty Herbicide would be a great post-emergent herbicide to use in Centipede for many different types of weeds.
Certainty Herbicide is labeled only for use in turfgrasses and is not labeled to be used in or around edibles and would not be used in areas you plant to plant vegetables. An alternative would be to use a non selective like Roundup/glyphosate or natural option like Avenger.
Certainty Herbicide should only be applied after the sod has been established and mowed at least 2-3 times or 30 days has passed.
For Sedge Control, you will apply this product at 1.25 ounces per acre after weeds have reached the 3- to 8-leaf stage of growth. A sequential application of 1.25 ounces per acre may be made 4 or more weeks after the initial treatment.
Please review the product label for more information.
Certainty is a post emergent product that can be applied to actively growing weeds. For the best timing on when to apply this in your specific region, we would suggest contacting your Master Gardener at your local cooperative extension office. This product may be applied once the grass that you overseeded is established typically after mowing least 2-3 times or at least 30 days. Please be sure to review the product label for more information and complete application instructions.
Certainty is only for use on warm season turfgrass.
For nutsedge and other listed weeds on the label, Dismiss Turf is a great option
Unfortunately, we do not currently carry any products that are labeled for quackgrass that are safe for use in your Kentucky Blue or Fescue grass. We would recommend spot treating with something like Roundup QuikPRO and reseeding the areas. Becareful to avoid getting the product on desirable grass. If most of the lawn has been affected by quackgrass, the only sure fire way to get rid of it is to spray the entire lawn with Roundup. Spray when the lawn is growing actively, preferably in the spring. The treatment will kill the lawn grass as well as the quackgrass. After about two weeks, you may begin the replanting.
Certainty Herbicide is both safe for use on Centipede grass lawns, and can be used to control dallisgrass. Dallisgrass is a difficult plant to control and multiple applications will be required to see complete kill. Most reapplications take place about 2-3 weeks apart.
When applying selective herbicides such as Certainty Herbicide exceeding the maximum rate per 1,000 sq ft, per acre or ounces per year you risk injury to the lawn but may also hinder the results desired.
Certainty Herbicide is a great option for nutsedge in a zoysia lawn.
No, SedgeHammer is not labeled to control poa annua. Certainty is labeled to control poa annua as long as you are following the instructions on the product label. They also contain different active ingredients
Unfortunately, there are very limited options for post-emergent control of dallisgrass in residential lawns. Certainty Herbicide is the only selective herbicide approved for residential lawns to treat dallisgrass however it is only labeled for suppression and not for control. A non ionic surfactant should be used with Certainty and you will have to make multiple applications to see results.
We recommend using a pre-emergent containing the active ingredient dithiopyr to prevent new dallisgrass, such as Dimension 2EW or Crew Specialty Herbicide.
Per the product label, This product is not for use on golf greens
Certainty Herbicide - 1.25 oz. can be used on golf course fairways, golf course roughs, golf course tess and other golf course areas.
Certainty Herbicide is only labeled to suppress or partially control quackgrass so it would not fully control it. A Non Ionic Surfactant is suggest to add to the tank mix for best results.
Also, Certainty is primarily for Warm Season Turfgrasses and labeled to kill tall fescue and perennial ryegrass in warm season lawns.
Certainty Herbicide is not for use on cool season turf like Kentucky Bluegrass and Ryegrass, it is only labeled for use on warm season turf. Unfortunately the only option to remove Kentucky Bluegrass would be to spot treat with a glyphosate or other non selective herbicide and then reseed the treated areas 2 weeks after the last application.
Yes, Certainty Herbicide will kill dollarweed in both St. Augustine and Zoysia grass. Mix rate is 3 - 5 small scoops or 1 - 2 large scoops per gallon of water per 1,000 sq ft.
Please review the product label for more information.
Certainty Herbicide is not for use on golf course putting greens.
Certainty Herbicide - 1.25 oz. is safe to apply on Zoysia but not if it is in a transitional state. You will want to wait till your lawn is fully green before applying any products on it or apply only as a spot treatment directly to weeds.
You could use a product like Dismiss Turf Herbicide to kill sedge and other weeds in the area. The most effective sedge products kill the plant slowly, and can often take a repeat application after 6 weeks to see full control. Nutsedge spreads through nutlets and tubers below the ground, so often when you kill the top plant, some of the attached tubers a few inches over will sprout a new plant. This is what makes sedge so invasive and hard to eliminate.
Certainty Herbicide is not labeled for applications to carpetgrass so could injure it but is safe for bermuda. We are unable to find a selective that can be used for poa annua safely in this turf. You can use Dimension 2EW for pre emergent prevention of poa annua and spot treat actively growing poa with a non selective herbicide and reseed/sod the bermuda.
Certainty Herbicide - 1.25 oz. is applied per acre with sufficient volume of water (10-50 gallons for ground equipment) to cover the acre (other mix rates listed on the label for smaller areas). The tank mixing instructions with other products can be found here.
