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urgent.....how long to wait

Discussion in 'Landscape Architecture and Design' started by The landscaper, Sep 9, 2006.

  1. The landscaper

    The landscaper LawnSite Senior Member
    Messages: 845

    how long should you wait after spraying a yard with round before planting the grass.
  2. forestfireguy

    forestfireguy LawnSite Senior Member
    from nj
    Messages: 601

    I haven't used round up in a dogs age. I think it is no longer soil reactive in 72 hours. But aren't you going to till it or scrape up the old stuff first, before seeding?
  3. Tadams

    Tadams LawnSite Senior Member
    Messages: 787

    I wait at least 7- 10 days. You might could get by with a shorter time frame but I wouldn't be able to sleep until the grass came up.
  4. lawnspecialties

    lawnspecialties LawnSite Silver Member
    Messages: 2,524

    If your question is referring to the Round-Up reacting with the soil or seed, I'd wait about two hours. Glyphosphate kills grass and weeds through the blades and then throughout the plant. It really does nothing to the soil. Once it's dry, it won't affect seeds.

    Now whether you want to wait 'til the grass and weeds die; then yes, wait about a week.:)
  5. YardPro

    YardPro LawnSite Gold Member
    Messages: 3,570

    lawnspecalties is correct.

    roundup has NO soil activity....

    it does need 24 hrs however to translocate into the root system, so wait at least 24 hrs before you do anything to the material you sprayed (ie, tilling, etc.)
  6. Precision

    Precision LawnSite Silver Member
    Messages: 2,995

    true. if you want the stuff there to die you need to wait at least 24 hours. Translocation takes atleast that long depending on temperature and some other factors.

    I always wait about a week. That way the grass/weeds are showing signs of being dead and I can hit any areas that I missed. Then wait another day or two then rototill and sod.

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