how long does glyphosate stay in ground?

[xyz321]

hi

our back garden is a bit of a jungle and am planning to get rid of all weeds plus overgrown lawn and lay new turf.

i was thinking of using glyphosate to remove all weeds in a raised bed and maybe overgrown lawn and then put topsoil and new turf. to be honest its probably late to sort it out this year so maybe i will clear as much as i can and then put new turf in spring next year.but maybe i can start planning small bits of garden sooner than sprint next year

question is how long does glyphosate "stay" in ground before i can start planting new stuff?

ta

 

[Belboz]

See here

http://www.ehow.com/how-does_5436386_long-roundup-stay-soil.html

 

[r896neo]

It doesn't stay in the ground at all. It only acts on foliage not soil.

 

[Mursal]

As above only the plant is affected.

Cut the overgrowth back and allow to green for a few days, then spray. Plenty of time, we might have a mild autumn, at the very worst you will have all the work done for the springtime. But, grass will keep growing until we get hard frost.

You can plant straightaway, a hour after spraying. But if you disturb the old plant it wont be able to take the weedkiller in. So usually 7-10 days and you will see it dying back, job done.

 

[xyz321]

thanks very much for ur help.

 

[Andyc84]

dig up your old turf, put in topsoil and re-turf, this could be done this year in early autumn... gives the turf time to root before winter and avoids the heat of summer!