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Grass Identification

Discussion in 'Pesticide & Herbicide Application' started by Enviro Green, May 29, 2003.

  1. Enviro Green

    Enviro Green LawnSite Senior Member
    Posts: 324

    A new account has this grassy weed in his yard, and he calls it Johnson grass. However, I wouldn't have thought to see a seed head on Johnson grass this early in the year, and it did not have large rhizomes. Any ideas on what this grass may be?

    Thanks!

    mvc-066f.jpg
     
  2. Enviro Green

    Enviro Green LawnSite Senior Member
    Posts: 324

    Another pic

    mvc-068f.jpg
     
  3. kickin sum grass

    kickin sum grass LawnSite Senior Member
    Posts: 628

    is the base of the stem flat or round. Roll it in your finger to tell. One of the seed heads looked like goosegrass but some of the others did not, unless they are drying out and opening up. If the stem is flat it could be.
     
  4. That's not Johnsons Grass, it would have a real wide blade with a red tint to the bottom of the base of each leaf.

    www.weedalert.com

    Can't find Johnsons grass on there, anyone know the other name for it?
     
  5. Enviro Green

    Enviro Green LawnSite Senior Member
    Posts: 324

    The base of the stem is round. This thing is some type of a weedy colonizer, because it is coming up in areas he sprayed with Roundup early this spring and last winter.

    I will check that website LGF. Thanks guys!

    EG
     
  6. kels

    kels LawnSite Senior Member
    Posts: 280

    looks like Poa Annua to me
     
  7. grassguy_

    grassguy_ LawnSite Senior Member
    from Ohio
    Posts: 633

    Annual Blue gets 2 votes! quite prevalent this time of year and especially is those areas were rounded-up last winter or early spring leaving nothing to compete with it.
     
  8. Enviro Green

    Enviro Green LawnSite Senior Member
    Posts: 324

    Roger that Captain!

    As I looked harder, I began to think annual bluegrass as well, but I didn't want to correct the homeowner at that point, due to the face he knew it was Johnson grass. Hmmm, what about control? Fertilization, aeration and over seeding?

    Thanks!

    EG
     

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