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Perfect Temps for Fall aerate/topdress/overseed

Discussion in 'Turf Renovation' started by sulston, Aug 9, 2007.

  1. sulston

    sulston LawnSite Member
    Posts: 52

    OK I know late summer/early fall is the best time to do any overseeding but I was just wondering if anyone knows specifically what kind of night/day air or soil temps are ideal to start my aerating/topdressing then overseeding. The grass here in Southern ON, Canada has been dormant pretty much since June, we've had no rain and hot hot temps so since the weather seems to be so F#@$ed up these days, I'd like to know a little more specifically when the conditions are best, rather than going by the seasons because they just aren't consistent anymore. Thanks for any advice.
  2. jeffinsgf

    jeffinsgf LawnSite Senior Member
    Posts: 641

    Your aeration won't work until you have some moisture in the ground, either wait until it rains or start the sprinklers. Overseeding should be done when temps are in the 70's to low 80's and there's a chance of some moisture (irrigation solves the second half of that equation). You would like the new plants to grow enough to be mown 5 or 6 times before winter sets in.
  3. MrC

    MrC LawnSite Member
    from Jersey
    Posts: 189

    The rep at Lesco told me that the first week of Sept. is best but the temps here are still in the upper 80's low 90's. 70's - 80's takes me into Oct. Oh, what to do?!?!?!?
  4. ProLawns

    ProLawns LawnSite Senior Member
    Posts: 476

    For fescue the temps should be between 60 and 85. Water is the key when establishing a new lawn. I start my seeding the second week of Sept. when the daily temps are in the low to mid 80s. A month later the yards look awesome.
  5. sulston

    sulston LawnSite Member
    Posts: 52

    Hey thanks a lot guys, this is exactly the kind of stuff I was looking for!

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