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When is it too late to spray TriMec or Mecamine

Discussion in 'Pesticide & Herbicide Application' started by greenngrow, Oct 29, 2002.

  1. greenngrow

    greenngrow LawnSite Senior Member
    Messages: 403

    With all the wet weather we have had here in KY I am so far behind on my applications it is not even funny. MY question to you is... Is it late for Tri-mec to work after cold weather. They are forecasting snow flurries this Friday.

    The label says apply when temps are at least 60 degrees. We will still have some of this weather in November.

    Just wanted to get some feeling out there of what others are doing...

  2. Kent Lawns

    Kent Lawns LawnSite Senior Member
    from Midwest
    Messages: 870

    Ideally, you'll want to spray when weeds are actively growing.

    Trouble is, that's when you're actively busting your butt on mowing.

    1.) You can use an Ester (oil-based) formulation which works more effectively at lower temps.

    2.) I spray past the ideal window every year and I'm convinced I still get good weed control from it. Bear in mind that FALL is a more ideal weed control time than any other time of year.
  3. tremor

    tremor LawnSite Bronze Member
    Messages: 1,476

    'I'd put my money on the Ester formulations if the nightime lows are dipping into the 40's & the day high isn't reaching 70.
    I've had to continue treating weeds after frosts & light snows & have been successful. But once the ground has frozen, it's pretty much over.
    Chickweed, wild Onion, & a few other winter anuals can be controlled longer.


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