I've got a lovely (being facetious) crop of CT growing in a clearing that's got some alsike clover (planted) and other weeds amongst some stumps that need removal before I can do any serious ground work in the area. I hit it with a reasonably heavy soaking of 10% gly, but I'm wondering if my water is hard enough to have hindered it's impact because we're at 5 weeks post-spray and the thistle is still plugging right along and growing seed heads.
Since I didn't mow or weed whack at all prior to my application (I wanted full absorbtion to the roots), I realize the plants are going to have lots of stores of nutrients to burn through. But how long will it take before they should start at least yellowing from the toxins? I'm mainly wondering if I should get some water treatment and mix up some more and do another application, or if I'm just being impatient and should let the stuff work through?
I did get a very good kill on just about everything else I sprayed. There's some grasses that seem to be holding their own, or it could be new growth after the existing stand was whacked. I did have seeded out grass there last year prior to the township's mowing.