chris5150

How long does it take to see the effects of vantage after being sprayed? I sprayed 1.5 weeks ago. The grass was about 10"-12" high but I cut it down to about 4" before spraying. There was not much laying on the top when I sprayed, so I got good contact with the grass. It was also about 70 degrees when I sprayed and there was no rain in sight.

Thanks for your help. Chris

PopGunWill

Chris, the Vantage I've used usually takes anywhere from 14-28 days before results are visible. It seems to depend on the type grass and the height. You mentioned you mowed the plot before spraying, did you allow any time for new growth????? Usually you need to get at least a few inches of new growth before applying the herbicide. That doesn't mean your spraying will be ineffective but it could cause a less than normal kill-off.

I wouldn't worry about the rain, if it had a hour it should have been rainfast by that time.

Have you noticed the grass growing since you sprayed. If not, the plants are dying and it will take a few more days to see the effects.

Let me know what it looks like in a couple weeks.

Good luck

rwilson

Chris... my experience with vantage has been that you don't notice a"kill" effect right away. The grasses just seem to stop growing and then in 3-4 weeks begin to turn brown and die back. RW

Strutter

Did you mix in a surfactant when you sprayed? I would assume you did but I didn't one time and nothing happened to the grasses I wanted rid of. Had to do it all over again. It is best to wait a few days after cutting so the grass will start to grow again. This helps the chemicals transfer to the roots better.

sean600classic

What is a surfactant and why is it necessary when using Poast or Vantage? I need to spray my clover plots and I don't want to make a mistake with the costly herbicides.

PopGunWill

You won't need a surfactant or crop oil if you use Vantage. With Poast it is necessary. With some herbicides a crop oil or surfactant is used as a sticking agent.