seeding after spraying

Discussion in 'Lawn Mowing' started by Drew Gemma, Nov 24, 2004.

  1. Drew Gemma

    Drew Gemma LawnSite Bronze Member
    Messages: 1,508

    A couple of times I have been told that you can spread grass seed right after you have sprayed Round-Up on existing turf. I was wonder if anyone has done this method and what the turn out was. Did it work and what must I do to make it work.
  2. tiedeman

    tiedeman LawnSite Fanatic
    from earth
    Messages: 8,745

    nope, won't work that I know of. Should at least wait a minimum of 2 weeks
  3. rodfather

    rodfather LawnSite Fanatic
    Messages: 9,501

    Or more like 30 days minimum.
  4. tiedeman

    tiedeman LawnSite Fanatic
    from earth
    Messages: 8,745

    ya, a lot of times its 4-6 weeks, but I have had results in 2 weeks in some occasions
  5. grassworks

    grassworks LawnSite Member
    Messages: 134

    In Fact, you can spray "Round - Up" right before seeding. Glycophosphate is not active in soil but is systemic in nature. As long as your seed does not germinate while the Round Up is present it will not harm the seeding process. Seed takes a minimum of 7 days usually and that round up is long gone by then............ I have done this many times and I also have used "drive" on a number of times in similar fashion. Just don't try it with most your broadleaf weed products as they have a longer lasting residual.
  6. kickin sum grass

    kickin sum grass LawnSite Senior Member
    Messages: 628

    i believe somewhere it says 7 days after spraying but I think it can be done sooner.
    Another view of this is in the farming world. Corn is a grass. When we no-till corn we spray it while planting all with one machine. The spray nozzles are mounted on the planter. One pass does it all and never had a problem with germination.
  7. trying 2b organic

    trying 2b organic LawnSite Senior Member
    Messages: 566

    2 days for Roundup and 3 weeks for 3 way. I use Ryegrass which germinates quickly maybe thats why waiting 2 days instead of same time works better.
  8. impactlandscaping

    impactlandscaping LawnSite Silver Member
    Messages: 2,332

    We wait 3-5 days max using 3% conc., and have never had any problems. It is a translocation uptake product, and is not viable in the soil alone.
  9. horseman201

    horseman201 LawnSite Member
    Messages: 153

    My LESCO dealer told me a few months ago that this was true. He said not to worry and put the seed down.
  10. Grassmechanic

    Grassmechanic LawnSite Silver Member
    Messages: 2,697

    Do a search on this, as this topic was brought up not too long ago. The point is that seed can be planted right after, or even along with R-up application.

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