Certainty Herbicide would not control crabgrass. Blindside would be a better option for the listed weeds and is safe on Floratam. Image Kills Nutsedge is another option for smaller lawns.
Certainty Herbicide requires a surfactant when using whereas Q4 already contains one, it would best to apply separately to avoid injury to the lawn.
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.
According to the product label for Certainty Herbicide - 1.25 oz.: Best results are obtained when poa annua is in the early state of growth and prior to tillering.
Daylillies are labeled as tolerant to Certainty Herbicide application. That being said, it would be best to directly spot treat the nutsedge and take care to avoid spraying the daylilies or allowing drift to contact them.
Certainty Herbicide can be used anytime weeds are actively growing and should not harm the Bermuda when used as directed on the product label.
While Certainty and Prodiamine can be mixed together with no issue, Prodiamin is only going to prevent spring germinating weeds from coming up and only if you are getting it down prior to soil temperatures reaching 50-55 degrees as that is when seeds germinate. Also, poa annua is a fall germinating weed so a spring application will not prevent anymore of it coming up. You would need to use something like the Prodiamine in the fall around Sept-Oct 15th to effectively prevent it the next year.
The 1.25 oz bottle of Certainty Herbicide will treat from 10,000 to over 35,000 sq. ft. (depending on the weed and grass).
Certainty Herbicide is not labeled to be used in areas animals would graze at all. We would like to refer you to the manufacturer since they are the experts on their Certainty product. The manufacturer is Monsanto and you can reach them at (800) 332-3111
According to the product label, you should wait at least 3 weeks before re-seeding or over-seeding after using Certainty Herbicide.
Certainty Herbicide - 1.25 oz. cannot be used in cool season grasses and will harm them. We are not aware of any product labeled to control poa trivialis in a bluegrass lawn. In your case it would be best to spot treat the poa with a glyphosate based product such as GlyPhoSel Pro and reseed the area.
Yes, Certainty Herbicide is labeled to eradicate burweed. Please refer to the product label for complete mixing and application instructions.
The manufacturer date to the Certainty Herbicide 1.25oz is located inside the box, on the bottom of the bottle.
Once Certainty Herbicide and Celsius has been mixed, it should be used within 24 hours. This is the general rule for all pesticides.
Certainty Herbicide - 1.25 oz. would be good for spurweed aka burweed.
The Certainty Herbicide label states the best results are obtained when target weeds are actively growing and not disturbed by mowing for at least 2 days before and 2 days after an application.
Yes, Certainty Herbicide can safely be used on Bermuda grass.