Fertilize and over seed at the same time?

Discussion in 'Pesticide & Herbicide Application' started by Joel B., Mar 20, 2003.

  1. Joel B.

    Joel B. LawnSite Senior Member
    from MN
    Posts: 458

    Can I put down a spring fertilizer/crabgrass preventer right after I over seed or will that deter the seed from growing?

    Thank you,

    Joel B.
     
  2. turfsolutions

    turfsolutions LawnSite Senior Member
    Posts: 852

    If you don't know the answer to that question then I don't think you are qualified to put down any pesticide. Just out of curiousity, are you liscenced to do this or are you a home owner asking advice. I hope the latter.
     
  3. Joel B.

    Joel B. LawnSite Senior Member
    from MN
    Posts: 458

    At least I can spell licensed. If I knew the answer, I wouldn't be asking it, would I?

    Can anybody offer some helpful advice?
     
  4. turfsolutions

    turfsolutions LawnSite Senior Member
    Posts: 852

    No you can't seed after putting down a pre emergant. A prem will keep the grass seed from germinating.

    Did I spell OK for you this time?:blush: :blob3: :blob4: :blob1: :confused: :alien: :mad: :rolleyes: ;) :D :cool: :) :( :eek: :eek: :angel: :sleeping:
     
  5. Lombardi

    Lombardi LawnSite Senior Member
    Posts: 538

    Joel, you should not put down the crabgrass preventer after overseeding as it is a pre-emergence and will deter the growth of any new seed. If you need to overseed, do so, and then apply some straight fertilizer. I have been using 19-8-8 on any overseedings this year.
     
  6. TSM

    TSM LawnSite Senior Member
    from MA
    Posts: 711

    Joel, the only crabgrass preventer on the market that you CAN use with new seed is Tupersan. It is a bit pricey. I would recommend you follow the advice given above by Lombardi.

    you could then apply a post emergent crabgrass control in the summer or, allow some crabgrass this season and apply your preemergent control next spring.

    good luck
     
  7. Joel B.

    Joel B. LawnSite Senior Member
    from MN
    Posts: 458

    Thank you Lombardi and TSM.

    Would I be better off using the crabgrass preventer in the spring and overseeding in the fall?

    I've never really had a problem with crabgrass but don't know if that is due to the fact I use the preventer or there just isn't a lot of crabgrass in my yard to begin with.

    Can a yard be overseeded in the spring AND in the fall of the same year?

    Thanks again,

    Joel B.
     
  8. How many lawns do you fert and apply herbicides to???
    You didn't answer the question, do you have a state pesticide licensed?

    I'll respect you for seeking help!!

    If turf density poor, overseed, apply tupersan, wait @ 4 weeks and apply pre emerge. Probable consider overseeding in fall again.

    Tim
     
  9. TSM

    TSM LawnSite Senior Member
    from MA
    Posts: 711

    Joel, I would answer your question like this....it depends
    :)

    if you have areas that need to be seeded due to last seasons heat/drought and/or areas that suffered from insect activity, then I'd say overseed in spring. This way you won't have to deal with a 'dust bowl' when summer heat comes around.

    If you just want to improve the density of your lawn or want to introduce a more favorable variety of turf, then I'd say wait to seed in the fall.

    Chances are, if you seed in spring, you will still have to spot seed in fall. Fall is a much better time to seed.

    thats my opinion.

    timturf also gave good advice. IF you do seed in spring and still want to control crabgrass use tupersan (it is expensive) then reapply a more conventional preemergent (i'd recommend dimension) about 4 weeks later.
     
  10. Joel B.

    Joel B. LawnSite Senior Member
    from MN
    Posts: 458

    Thanks again, guys.

    No I don't have any pesticide/fertilizer licenses and am not doing any applicating commercially, just my own lawn. I hope I wouldn't be asking these questions if was licensed!!

    I'm just a guy with a lawn mowing/snow plowing business that would like his own thin lawn to look nicer. I'm also looking into a sprinkler system.

    Joel B.
     

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