I have some grass in my clover plot I want to get rid of. On Saturday morning I got some poast and applied it to the plot and on the gresses espically. My question is how long dose it take to work? After 36 hours there was no sign of death or decay on the grasses.

My experience is that you may not see any browning or yellowing for up to 2 weeks. What you will see with in a week is the lack of growth of grasses. They just kind of stay the same, or dormant. Could take up to a month to see total browning and dying in grasses. It also differs depending on grass species and the strength of the mixture you applied.

I guess I'm just impatient. Thanks for the info. I wait a while longer.


Yup, five days out and the grass is starting to brown and wilt.