Pre-emergent Application?

Discussion in 'Homeowner Assistance Forum' started by cross1933, Apr 2, 2008.

  1. cross1933

    cross1933 LawnSite Member
    Posts: 165

    What weather condition is used to determine the (best)time for pre-emergent application in the spring?
     
  2. Capemay Eagle

    Capemay Eagle LawnSite Bronze Member
    Posts: 1,750

    Not sure about your zone, but here some say apply at the forsythia bloom. Make sure if you are going to seed, that you seed first.
     
  3. cross1933

    cross1933 LawnSite Member
    Posts: 165

    I thought the pre-emergent will kill the new seed? I was told by the Lesco dealer not to seed if I was using the pre-emergent?
     
  4. Grassmechanic

    Grassmechanic LawnSite Silver Member
    Posts: 2,697

    If you are going to seed, don't use a preemergent until the seedlings are well established.

    Forsythia bloom is a general rule of thumb. Soil temp is a better indicator. 55 degrees (soil temp) is usually a good temp to get the preemergent down
     
  5. IN2MOWN

    IN2MOWN LawnSite Platinum Member
    Posts: 4,993


    He's right. Just wait till fall to seed. Pre-emergent will do the same things to grass seed that it does to weed seeds. Stop them from "emerging".
     
  6. Capemay Eagle

    Capemay Eagle LawnSite Bronze Member
    Posts: 1,750

    I should have been more specific. I was saying that if your going to seed, I would seed before you apply any pre-emergent. The pre-emergent will kill the seed.
     

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