I have been using fusilade II in my daylily (hundreds of daylilies reside here in my garden) that has a wide variety of other plants (including iris and lilies)intermixed to get rid of quack grass for at least six years. I just spray the quack grass sometimes some gets on other plants sometimes use a large piece of cardboard to kind of sheild other plants if I have extra time, none of them have died here in my large garden. I have sprayed the quack grass when it is getting taller which looks bad when it turns yellow once it truns brown it is pulled or cut off. AHS members that have display gardens informed me to use this as many of them use the product. Each year the quack grass is less and less, it sure beats trying the hopeless chore of digging out the quack grass which never did work for me. My back tells me to keep using it, if you like to dig endlessly that is your choice. Have many other things to do will never be using a sponge paint brush way too time consuming. Here is the sprayer I use following the instructions included.
https://www.menards.com/main/o...
Perhaps it could impact some plants that I don't grow which might be sensitive to the product.
