How would you diagnose this?

Discussion in 'Lawn Mowing' started by dpullen4, May 9, 2005.

  1. dpullen4

    dpullen4 LawnSite Member
    from Indiana
    Messages: 68

    Lawn is in its 3rd year and has some bare spots primarily due to some concrete work done last fall and a few dog spots. I was just wondering why most of my lawn is pretty consistent except for a few patches of the real dark thick green stuff.

    What should I do? BTW, I realize the yellow spots are dog marks, but the real thick dark green stuff doesn't coincide being around the dog spots. The dog is now taking treats to neutralize the ammonia and not burn the grass. Works pretty well.




  2. ProCare Lawn Service

    ProCare Lawn Service LawnSite Member
    Messages: 167

    Have you fertilized and maybe more fertilizer landed in those spots?
  3. pines

    pines LawnSite Member
    Messages: 148

    Top dress w/ topsoil & seed/fert/straw. Make sure fert is starter fert>
  4. dvmcmrhp52

    dvmcmrhp52 LawnSite Platinum Member
    from Pa.
    Messages: 4,205

    Maybe I'm missing something but by looking at the pictures the "dog spots" sure look like they coincide with the "dark green" patches...............
  5. dpullen4

    dpullen4 LawnSite Member
    from Indiana
    Messages: 68

    Just in those couple of patches, but the yard as a whole, no.
  6. dvmcmrhp52

    dvmcmrhp52 LawnSite Platinum Member
    from Pa.
    Messages: 4,205

    Any chance the "other spots" are old dog patches?
  7. dpullen4

    dpullen4 LawnSite Member
    from Indiana
    Messages: 68

    I don't think so. She does almost all of her duties right off the patio where the spots are pictured or in the ver back of the yard. It's pretty scattered throughout the yard.

    I don't think it's spots of extra fertlizer. I could understand a couple spots, but not like this.
  8. Runner

    Runner LawnSite Fanatic
    Messages: 13,497

    OK. If it's not dog spots, chances are it is something under the soil surface, such as some sort of organic material. Many times, there can be pieces of wood, old roots, and/or other debris that is brought in with the topsoil when installed. These roots and/or pieces of debris decompose and release nitrogen. This will cause the discoloration in the grass. As a matter of fact, by the third picture, I can almost bet that is what it is. It looks much like fairy ring to me, except that it appears to be a full circle. This is a direct indication of tree roots, where a tree used to be. (I know, are saying "You think?" LOL). In ine of te other pictures, this one concerns me a little, because it looks like there could be a bit more going on, there. It looks somewhat like some early or mild stages of chinch bug damage. I wish I could see it up close. It may even be Red Thread, but I just can't tell without seeing it up close.
    The pic with the brown spots are definitely dog spots. The tell tale sign of this is not the spot itself, but the dark green area aroung the burnt spot. I hope this helps.
  9. Triple R

    Triple R LawnSite Member
    Messages: 244

    My opinion dark green, also dog spots. I have had similar spots in lawns with dogs, dark green spots are usually growing faster than the rest of the lawn. I usually fert lawn to even out the green.
  10. Mower For Less

    Mower For Less LawnSite Senior Member
    Messages: 823

    You need to sharpen your mower blades also, the grass is obviously torn and not cut, and that dont help anything out.


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