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Crabgrass / Dethatching

Discussion in 'Turf Renovation' started by precator, Aug 14, 2012.

  1. precator

    precator LawnSite Member
    Posts: 70

    After killing off the crabgrass, will a de-thatching blade for my lawn mower pick up most of the dead crabgrass? Anyone tried this?
     
  2. Smallaxe

    Smallaxe LawnSite Fanatic
    Posts: 10,081

    I find that CG roots take a long time to give up after they are killed, during the growing season... they come up more easily after they are frost killed... I think you'd have created a lot more damage to the rest of the living turf, than is worth the minor amounts of CG bodies, gotten rid of...
     
  3. precator

    precator LawnSite Member
    Posts: 70

    My goal is to overseed this fall though..
     
  4. Smallaxe

    Smallaxe LawnSite Fanatic
    Posts: 10,081

    I'm overseeding already, because the threat of even 80 degrees or more is past, let alone 90s... once it is cool enough to mow the lawn short again you can broadcast or slit seed grass seed, right after a mowing... since you have a lot of CG you may easily wait till frost time approaches, so you still have time, to get the seed nestled under the turf...

    Anyways, once the CG freezes its dead bodies will serve the same purpose as a straw covering does, for a new seeding... the idea of picking up thatch(dead grasses) then putting down straw is counter-productive... I've never seen straw do as good of a job as seed coming out of a good mulch mowed lawn... especially with a nice compost topdressing... :)
     

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