Dormant crabgrass, couple of questions

Discussion in 'Turf Renovation' started by gml9, Mar 30, 2006.

  1. gml9

    gml9 LawnSite Member
    Posts: 109

    I'm currently in the middle of renovating my parents lawn. So far I've mowed lawnvery short, thatched, dethatched, sprayed round-up along on weeds that were in the fence-line. Was planning on slit-seeding/fescue and using starter fertilizer. Should I use a crabgrass preventer first? Or will the new lawn hold up? Should I aerate prior to slit-seeding? My main concern is the crabgrass coming out of dormancy and choking the fescue seedlings. Any expert advice would be I'm anxious to get a plush lawn established. Thanks!
  2. TScapes

    TScapes LawnSite Senior Member
    Posts: 453

    Let's breakdown your question for a brief moment. This should hopefully help you answer your own question.

    First, take a moment and look at your first question... "Should I use a crabgrass preventer first?"

    What is in this product and why does it "PREVENT" crabgrass? It really works to stop or "Prevent" from the crabgrass seed from emerging or thus, growing. This is called a PRE-EMERGENT. So if it prevents crabgrass seeds from emerging, would it not make sense that it will also prevent from the grass seed from emerging? YES!:hammerhead:

    To answer the question of aerating b4 slitseeding, well that depends on how compacted your soil is. I don't know, but usually that is not necessary.

    There are several products that you can get at Lesco and various other vendors that you can do all the above without any lapse or problems, but I would recommend that for someone that is a little more experienced. B/C if you really knew what you were doing, you wouldn't have asked these questions.

    Good Luck!:waving:
  3. gml9

    gml9 LawnSite Member
    Posts: 109

    ....and why did you respond to my thread! I was asking for advice...not an *******! Get a life.........
  4. Grassmechanic

    Grassmechanic LawnSite Silver Member
    Posts: 2,697

    Crabgrass doesn't "come out of dormancy". It is an annual weed that re-seeds itself every year. Perhaps you are mistaking CB for something else?? Crabgrass can be treated both pre-emergently and post emergently. It's not that big of a deal to treat CB, just make sure it is being identified correctly. If you are seeding now, treat the CB post-emergently.
  5. upidstay

    upidstay LawnSite Bronze Member
    from CT
    Posts: 1,346

    GML9. Here is some advice. I generally don't like to pontificate unless people are talking about playing with chemicals without any sort of training. As far seeding goes, you have to learn how to do it sometime, and that's what this site is for.

    This is how I like to do it:
    Do a soil test.If a lawn is totally trashed and needs to be replaced completely, mow it short, spray it down with Round up. Wait a few days and hit the spots you missed. then aerate it in 2 directions, more if it is heavily compacted. Let the plugs (if any) bake in the sun for a day or two, then slit seed in two directions with seed that fits the locale and maintenance profile. If somebody is not going to maintain it properly, then i like turf-type tall fescue. The types of seed I use are cool-season types, as I am in CT. Not sure how the climate is in your neck of the woods. I would contact my local Ag. extension specialist, Lesco rep, or look up your local colleges. See what they recemend. I like to slit seed in 2 directions, verrrrrry lightly hand rake off any heavy debris, then broadcast a little seed over that
    Apply pH enhancer as soil test recomends. We have mostly acidic soils here in CT, so this is almost always lime stone. Apply a good starter fertilizer at label rate. Apply mulch (pellets or hydro, not straw. there are weeds in straw). then just keep the soil moist. Not wet. Moist. We usually water 2-3 times a day for 5-15 minutes a pop. Sprinkler timers are a beautiful thing.
    As far as the crabgrass preventer go, there is Tupersan, but it is really expensive ($90/bag) and has a narrow window of opportunity (2 weeks or so). Wiat until the last possible moment and then use Dimension, as long as the lawn is established well. If not spot treat with Drive. Remember that this is baby grass and is very delicate. If you have kids, liken it to baby soap and shampoo. You don't use adult soap on an infant because it will hurt it's skin. You can't use certain herbicides on new grass either. Good luck!!!
  6. countryclub

    countryclub LawnSite Member
    Posts: 7

    This was an excellent description thank you for that. what would you charge for this procedure?

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