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Pre M on fall seeded lawns?

Discussion in 'Pesticide & Herbicide Application' started by lance1, Feb 12, 2006.

  1. lance1

    lance1 LawnSite Member
    from NJ
    Messages: 52

    I'm new to this GREAT site. Question is should I use a pre m this spring on customers lawns that were seeded in late October Early November or should I just treat the weeds & crabgrass later. Really appreciate your replies of your experiences with this scenario.
  2. Green-Pro

    Green-Pro LawnSite Bronze Member
    Messages: 1,420

    I will not use a Pre-Emergence on the lawns I seeded late in the fall, instead I will put down a round of starter fert. I already explained to these customers they would experience a degree of weed growth and that getting the turf established is the most important thing at this point (spring '06), I went on to explain to them if we get the turf up to a healthy stand we can use a Post-Emergence such as Drive to help bring weeds under control.
  3. garydale

    garydale LawnSite Senior Member
    Messages: 813

    What were the lawns like last year? Heavy crabgrass then means trouble this year.

    Drive would work if you only have a light outbreak.

    Not having enough info, I would do R-1 starter fert. and R-2 Dimension as late as you can using soil temperature for proper timing.
  4. The Ranger

    The Ranger LawnSite Member
    from NE Ohio
    Messages: 208

    if the #1 desire is to get the grass to germinate from last fall you cannot use a normal pre emergence product to prevent annual grass germination this spring. It will also prevent the new seeds from germination.
  5. lance1

    lance1 LawnSite Member
    from NJ
    Messages: 52

    garydale, the lawn last year had some spots of crabgrass.
    The property is 1.4 acres in a 2 year old development.
    The neighbors lawn is a mess, totally cover with crabgrass last year.
    The seed has germinated already. It was tall fescue & Bluegrass blend.
    Lots of clay in the soil.
    The lawn still is not totally filled in but I'm hoping with a feeding in the early spring things will fill in. Just don't want to halt the establishment with a pre emergent. With this info do you have any other suggestions.
    Thanks for your previus recommendations.
  6. garydale

    garydale LawnSite Senior Member
    Messages: 813

    Get a soil thermometer and check soil temps on south side of property. Crabgrass germinates at 55 degrees+/- at about two inch depth.

    Great thing about Dimension is it's post emergent action on young crabgrass.
    Keep Drive handy for breakouts.

    There is a product called Tupersan that is made for seeded areas. Check with Southern States Coop if one is near you.
  7. lance1

    lance1 LawnSite Member
    from NJ
    Messages: 52

    Thanks again Gary, your response makes sense.

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