Mark writes
We do not recommend coming Q4 Plus Herbicide with other post-emergent herbicides such as Triclopyr Ester. The Q4 already contains 4 active ingredients and covers a wide variety of weeds, so adding more active ingredients could damage your desirable turfgrass.
While you can add a surfactant with Hi-Yield Triclopyr Ester, we do not recommend adding it to Q4 Plus since that can increase the risk of injury to your desirable turf.
If you would like to tell us more about what specific weed(s) you are targeting, then we are happy to offer additional recommendations. Be sure to read and follow the product label(s) of any herbicide(s) that you are using.
Answer last updated on: 05/09/2021
