Time needed after gly before mowing

[Gator]

How quick can you mow after you spray gly and still get a good kill? So how quick does gly get to the roots so that mowing doesn’t prevent kill? 1 day?

Normally rainproof in one hour so that means in one hour it’s been absorbed but has it made it to the roots yet?


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[X-farmerdan]

I dunno Gator. I think the answer depends on a lot of variables too numerous to consider. Rain proof just means the herbicide as been absorbed...not that it has moved through the plant. I'd wait a couple days. Just off the top of my head, I'd say 7-days before mowing.

Some research I remember involves spraying plants in a perfect environment, a greenhouse, and then measuring the movement of gly thru the plant over time. I was surprised at how long it took - days - not hours - in a greenhouse. Think about how long it takes for the sprayed plants in a field to yellow and die. That might be the best indicator.

 

[catscratch]

I'm going to have to run a test on this (because this pops up so often). I'll spray a patch; mow part of it later that day, mow part of the next day, and another part the day after that. I'll leave part of it un-mowed and take pics of each section until the mowed part is completely dead. Someday I will have an answer for you guys!

 

[Bowhunter]

I’ve used the “spray and wait a week” method with great results.

Not sure if that’s the soonest that you can mow after spraying, but this has always worked for me.

 

[Mennoniteman]

The Roundup website says this: We recommend that you leave treated weeds for about 7 days before digging or cultivating the soil to allow Roundup to move to the roots of the weed.

 

[George]

I always got good kills by mowing then spraying. If I sprayed first I would try to wait a week, usually made it 3 or 4 days.

G

 

[Gator]

I always got good kills by mowing then spraying. If I sprayed first I would try to wait a week, usually made it 3 or 4 days.

G

I’ve had good luck with that method as well especially if I waited a couple of days after mowing. I changed it up just bc I’m in a rainy period and I don’t know when it’s going to end but like Native I’ve been having bad luck lately with rain in September. I’ve never planted this early before


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[Cap'n]

As stated above it depends of many environmental conditions. Is what your spraying actively growing or hardened off and seeding. Is there available moisture for it to grow or is it in a drought or somewhere in between. Cold weather slows down the translocation of gly and hot weather speeds it up. All that and more can effect the action of the chemical but generally after 2-3 it will be to the roots.

 

[bigbluetruck]

For best results Ive found theres 2 ways that work. 1 is to spray and wait a week, or 2 mow but not super short and then wait until it gets some growth back then spray, that could be anywhere from a couple days to a week. It also depends on what youre trying to kill, around here Rup only works on grass anymore.

"Here" option 2 works early in the year, but by this time, it takes awhile to get some growth so #1 works better.