One month ago I used weed killer and waited two weeks to overseed and after seeing all weeds dead I overseed and used starter fertilizer and now I have some green weeds on my grass. What are they? what did I do wrong? Right side have no problems. I haven't seen new grass anywhere though, maybe they dried because of sun. Before overseed I did rake my grass and got rid of dead grass. I kept soil moist all the time. Temp. was around 70-80 range. Kansas City, Missouri.

I don't know the last time it was fertilized.




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  • 1
    Regular mowing at lower level should solve the problem (possibly without watering after the mowing). Commented Jun 14, 2018 at 7:54
  • I mow twice a week with a high level and yes I do water after mowing :) Maybe these two causing the problem.
    – Sami
    Commented Jun 14, 2018 at 16:29

1 Answer 1


That looks like either crabgrass or quackgrass.

What overseed mix did you use? It seems likely this is a seed from that mix.

  • I used ScottsTurf Builder Grass Seed Sun and Shade Mix. I haven't seen any new grass growing and these weeds only grow only one side but seed two sides. scotts.com/en-us/products/grass-seed/…
    – Sami
    Commented Jun 13, 2018 at 21:35

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