Poa annua

Discussion in 'Pesticide & Herbicide Application' started by PKLIP, May 17, 2018.

  1. PKLIP

    PKLIP LawnSite Member
    Messages: 183

    I have a client who has a relatively nice and thick lawn, it looks good. He called me the other day and said "my lawn is completely covered in weeds, it showed up overnight". I go to his house and see his entire lawn covered in Poa annua. Not necessarily dense, but evenly distributed over his entire lawn. His neighbors lawn didn't have any. What caused such a infestation of it and how should I treat it? Our lawns are Tall Fescue, I am in Northern Virginia.
     
    Last edited: May 17, 2018
  2. hort101

    hort101 LawnSite Fanatic
    Male, from S.E. New England
    Messages: 13,497

    Any seeding been done?
     
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  3. PKLIP

    PKLIP LawnSite Member
    Messages: 183

    Yes we aerated and over seeded last fall
     
  4. hort101

    hort101 LawnSite Fanatic
    Male, from S.E. New England
    Messages: 13,497

    Some may have been in the seed?
    Stirred up dormant seeds or seeds blew in and grew in bare areas?
     
  5. takervader

    takervader LawnSite Senior Member
    from Alabama
    Messages: 282

    Likely it was in the seed you put down. I would let it die now, its about to get hot in Virginia. I wouldn't put anything on that.

    If its looking really bad in August I may re-evaluate, but I would say to put down a heavy dose of pre-emergent this fall around mid-September when you are ready to fertilize the fescue.
     
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  6. hort101

    hort101 LawnSite Fanatic
    Male, from S.E. New England
    Messages: 13,497

    What about reseeding the thin or bare areas?
     
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  7. tebletlawns

    tebletlawns LawnSite Senior Member
    Male, from Kansas City
    Messages: 403

    Got the same call. New lawn for us this year. They have a few dense patches
     
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  8. GREENITUP

    GREENITUP LawnSite Senior Member
    Messages: 291

    Yep - this has been one of the worst years for poa I can ever remember.
    Bag those seeds when mowing the next 1-2 times dude (if possible). the plants here (South East VA) are already yellowing out - you should be almost there. Some pre-em in the fall will cut back on it next year as well. But you are stuck with it at this point / for this year anyway.
    also - if it's "evenly distributed" you might have got some crappy seed. Either way - this year has been the worst. good luck.
     
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  9. PKLIP

    PKLIP LawnSite Member
    Messages: 183

    20180514_093720.jpg

    Here is a picture of it. It is evenly distributed right up to the property line. The neighbors on both sides don't have any at all. I am just going to wait for it to die off and then put down a pre-emergent this fall. Thanks for the replies.
     
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  10. hort101

    hort101 LawnSite Fanatic
    Male, from S.E. New England
    Messages: 13,497

    One possible help if you have a bagger mow low and dispose of the clippings
    It will reduce the seeds for next yearThumbs Up
     
    PKLIP likes this.

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