Acclaim Extra Selective Herbicide is a great herbicide that is labeled to treat Japanese stiltgrass in an ornamental iris bed.
A pre-emergent herbicide such as Pendulum Aqua Cap would help with prevention but will not treat actively growing Japanese Stiltgrass. We would suggest a selective post-emergent such as Acclaim. Acclaim Extra is a selective post-emergence herbicide that controls annual and perennial grasses in turf including Japanese Stiltgrass. Please refer to product label for specific applications to your turfgrass.
You will use 1 tsp. of the Non-Ionic Surfactant for Herbicides per gallon of water with Acclaim Extra Selective Herbicide.
It can take about 2 weeks to burn down stiltgrass after Acclaim Extra Selective Herbicide application.
There are several different surfactants that can be used with Acclaim Extra Selective Herbicide. Kinetic Nonionic Surfactant would be a good choice.
Acclaim Extra Selective Herbicide is a post-emergent only and will not prevent any seeds from germinating. We are unaware of a pre-emergent labeled for it, though there is an article here by the University of Ohio that states pendimethalin could prevent it.
According to the product label for Acclaim Extra Selective Herbicide, it states that it may be used on Liriope. This product should be applied when the target weeds are actively growing and healthy.
No, Acclaim Extra Selective Herbicide will not kill bentgrass.
Acclaim Extra Selective Herbicide will control seedling Johnsongrass, and it will suppress rhizome Johnsongrass and is safe for use in fine fescue. Apply Acclaim Extra Herbicide at 20 fluid ounces per acre (0.46 fluid ounce/1000 sq. ft.) as soon as common Bermudagrass or rhizome Johnsongrass begins growth. Repeat applications of Acclaim Extra every 28 to 35 days to continue growth suppression of these species. Do not apply more than a total of 120 fluid ounces per acre (2.75 fluid ounces/1000 sq.ft.) per growing season.
Please see the product label for complete application instructions.
Mixing three different post-emergent herbicides together at once would put a lot of stress on your desirable grass and usually would not be recommended. Tenacity Herbicide is not labeled to control Bermuda grass, but both Triclopyr Ester and Acclaim Extra are labeled to control or suppress Bermuda grass. Keep in mind that Bermuda grass may require multiple applications to eradicate, especially if it is already established.
The addition of a surfactant such as the Non-Ionic Surfactant for Herbicides will improve coverage per the product label for Acclaim.
Acclaim Extra Selective Herbicide is applied when the target weeds are actively growing and healthy.
Generally you would apply a post emergent herbicide like Acclaim Extra Selective Herbicide when the weeds are actively growing and healthy, meaning not drought or heat stressed.
It would be best to call your local county extension office for when to apply any type of herbicides or insecticides in your area. They would know better than we would since we are not the manufacturer and we live in Georgia. They will know exactly when you should apply it in your specific county.
You can find your local county extension office information here.
No, Acclaim Extra Selective Herbicide cannot be used on bermuda as it is labeled to suppress it.
Acclaim Extra Selective Herbicide is not labeled to be applied in pastures. Depending on what you are treating for Martins Clear pasture would be a great option.
