Can I use roundup before I seed?
#5
I hope someone out there has better luck with Roundup than I've had.
I got it to kill weeds and grass before seeding and it said it would "show results within 6 hours."
Well, the "results" were that it just made the grass a little bit brown and didn't kill it at all. This was after I basically soaked the ground with the stuff.
MNow, maybe I have some kind of hardy midwest grass that's super-hard to kill (lol), but I'm looking for something else - Roundup didn't do squat. Just FYI to check and see what works for other people in your neck of the woods before you spend too much money.
I got it to kill weeds and grass before seeding and it said it would "show results within 6 hours."
Well, the "results" were that it just made the grass a little bit brown and didn't kill it at all. This was after I basically soaked the ground with the stuff.
MNow, maybe I have some kind of hardy midwest grass that's super-hard to kill (lol), but I'm looking for something else - Roundup didn't do squat. Just FYI to check and see what works for other people in your neck of the woods before you spend too much money.
#6
Typical Buck
Join Date: Feb 2003
Location: Cambridge Ohio USA
Posts: 744
Roundup (glyphosate) works very well. Not sure what you were using that promised results in 6 hours, likely highly concentrated name brand stuff. Still, 6 hours seems unreasonable for most plants. I wait a minimum of two weeks before determining what died and what didn't. If high dollar Roundup didn't work at all, something went wrong on your end.
#7
Fork Horn
Join Date: Jan 2009
Location: MN
Posts: 342
Fast acting roundup formulations add an ingredient to burn plants. This doesn't mean the plants actually die in 6 hours, just that they have been sprayed and they get brown specks (as you observed). Magis is right, patience is still needed for the roundup to actually kill the plant.
#9
Typical Buck
Join Date: Feb 2003
Location: Coffeyville KS USA
Posts: 931
I can see results in 24 hours when I spray. This is on things like johnsongrass, ragweed, pigweed. I'm using generic glyphosate at 2%, adding 1% ammonium sulfate, and adding .5% crop oil spreader/surfactant. Ammonium sulfate is about $20 for a 50lb bag. The spreader is about $50 for a 2.5 gallon jug. I bought generic gly yesterday for $37.50 for a 2.5 gallon jug.
Use AMS & a surfactant.
Use AMS & a surfactant.
#10
It was actually Roundup - got it at Home Depot. It just didn't work. Even after a week or more. I didn't really expect the grass to be dead and gone in 6 hours. I just thought the whole "results within 6 hours" claim was a little bit misleading when all it did was turn some of it brown and leave the rest unaffected (seemingly).
I gave in and just dug up the grass in the area (luckily it was small, otherwise I could have had a good workout).
Who knows - maybe I got part of a "weak batch" or something.
I gave in and just dug up the grass in the area (luckily it was small, otherwise I could have had a good workout).
Who knows - maybe I got part of a "weak batch" or something.