According to the QuickSilver T&O Herbicide product label is very toxic to algae and moderately toxic to fish. This product should not be applied directly to water, to areas where surface water is present or to intertidal areas below the mean high water mark. People and pets should remain out of the treatment area until spray has dried completely.
QuickSilver T&O Herbicide cannot be used in or around a garden and would not control anything actively growing. It only prevents weeds from emerging when applied before they germinate.
Yes, you can use the rate of 1 mL of QuickSilver T&O Herbicide per 1000 sq ft on tall fescue. You can tank mix this product with other herbicides and fertilizer, however it is always recommend to perform a small jar test for compatibility before treating an entire area. The product label does recommend using at least 20 gallons of water per Acre, or 5 gallons per 10,000 sq ft. You may see some discoloration on fescue within 3-5 days of application.
QuickSilver T&O Herbicide is labeled for dollarweed and beggarweed in Floratam grass but not nutsedge. You can use something like Dismiss Turf for sedge.
QuickSilver T&O Herbicide is not labeled for control alligator weed. This invasive plant is best controlled using triclopyr, glyphosate, or a few other select herbicides that can be very expensive. Unfortunately, we do not know of any herbicide that is labeled to control this plant that would not also harm St. Augustine turfgrass. Alligator weed is most often found in marsh areas or along waterways, so you generally will need to use an herbicide that is safe for use in aquatic areas.
Hi-Yield Killzall Aquatic is a good choice for smaller areas. AquaStar Herbicide would be good for larger areas. You should apply when most plants are flowering, and keep in mind that multiple applications may be required. You should also use a non-ionic surfactant with either of those herbicides for best results.
You can also read more about alligator weed in this article.
Yes, QuickSilver T&O Herbicide could be tank mixed with Trimec Classic Herbicide. When tank mixing always conduct a physical compatibility test by mixing proportional amounts of all spray ingredients in a test vessel (jar). Shake the mixture vigorously and allow it to stand for five to ten minutes.
Refer to each product label for Tank Mixing Instructions and follow the most restrictive label.
QuickSilver T&O Herbicide (Carfentrazone-ethyl) is a selective post-emergent that will kill only the weeds listed on the product label without injuring tolerant warm and cool season turfgrasses.
Roundup (Glyphosate) is a non selective herbicide that kills both weeds and grasses including desirable turfgrass in lawns. Both are safe when used as directed on their respective product labels.
People and pets should be out of the area during treatment until dry, typically after 4-6 hours.
