Crabgrass

Discussion in 'Lawn Care/Landscaping' started by Hydrohead, Apr 14, 2007.

  1. Hydrohead

    Hydrohead Junior Member

    Messages:
    1
    Location:
    Great Northwest
    What is the best way to eliminate crabgrass, and at what time of the year? I have tried overseeding and fertilizer for the last two years and it seems to have stopped spreading, but it is still pretty thick.

    Thanks
  2. Gary Swart

    Gary Swart In the Trades

    Messages:
    7,360
    Location:
    Yakima WA
    You use an application of a product that prevents the seeds from germinating. The most common brand is Scott's Halt. It must be put down at the correct time and remain undisturbed for the entire growing season. Obviously, you can not overseed or otherwise plant new grass.
  3. Hydrohead

    Hydrohead Junior Member

    Messages:
    1
    Location:
    Great Northwest
    Does Halt stop it from spreading or kill the germinating crabgrass? I'm to the point where I think I just need to kill off everything and start over. With 1/2 acre of grass, that's not my first choice!
  4. Wet_Boots

    Wet_Boots Sprinkler Guy

    Messages:
    798
    Location:
    Metro NYC
  5. Hydrohead

    Hydrohead Junior Member

    Messages:
    1
    Location:
    Great Northwest
    Thanks boots
  6. prashster

    prashster New Member

    Messages:
    941
    pre-emergent herbicide when the forsythia blooms drop.
  7. Bob NH

    Bob NH In the Trades

    Messages:
    3,317
    Location:
    New Hampshire
    I used some of the post-emergence stuff last year and it did serious damage to some of the fescue in the lawn. It didn't kill it but retarded its growth for much of the summer.

    If you go the Round-up route to kill it all, get the concentrate and mix your own. Those 1-gallon premixed things are very expensive for what they cover.

    If you are going to kill all, you should probably start the process in late summer for a fall reseeding. You can rent a slice-seeder so you don't have to till the whole lawn. Tilling the whole lawn will stir up a lot of weed seeds and cause them to germinate.
  8. Hydrohead

    Hydrohead Junior Member

    Messages:
    1
    Location:
    Great Northwest
    I appreciate everyone's input. Thanks!
  9. jimbo

    jimbo Plumber

    Messages:
    8,997
    Location:
    San Diego
  10. prashster

    prashster New Member

    Messages:
    941
    If yr gonna buy concentrate, buy 'glyphosate' generic concentrate (the ingred in roundup) from another company. HiYield makes a prod that's 41% glyphosate. I think residential roundup is like 2% glyphosate, so a gal will last you forever.

    However, I gotta say that in 2 years of using it, I hate it. I outfitted a pair of salad tongs with foam paintbrushes so that I could dip and carefully grab individual leaves to 'spot' kill. Didn't work too well.

    It's easier to just pick the plants out by hand. Get em as soon as they emerge.

    2 step process: put down pre-emergent. Then handpick young plants as they emerge.
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Forum Title Date
Lawn Care/Landscaping Crabgrass Jun 22, 2006

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