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How long for Trimec to be rain fast?

Discussion in 'Pesticide & Herbicide Application' started by SpikeGT, May 9, 2007.

  1. SpikeGT

    SpikeGT LawnSite Member
    from NW OH
    Messages: 74

    How long should Trimec be put on before it's rain fast? I put it on my yard to kill dandelions Tuesday night @ 6:00 pm. It's now Wednesday around 11:00 am and threatening to rain. Will it be rain proof yet? Thanks
  2. wrivers

    wrivers LawnSite Member
    Messages: 45

    If you used a spreader/sticker you're probably OK. Ideally you'd give it at least 24 hours, though. Wes
  3. indyturf

    indyturf LawnSite Bronze Member
    from Indy
    Messages: 1,901

    As long as its not a down pour you should still get good results after a couple hours.
  4. SpikeGT

    SpikeGT LawnSite Member
    from NW OH
    Messages: 74

    Thanks guys. I think I got those darn dandelions they were all curled up this morning so I don't think the rain will have any effect.
  5. heritage

    heritage LawnSite Bronze Member
    Messages: 1,358

    What was the temp when you applied? The warmer the air, the quicker it's rainfast.

    Pete D.
  6. americanlawn

    americanlawn LawnSite Fanatic
    from midwest
    Messages: 5,954

    Sounds like good advice from fellow members. There are several formulations of Trimec, but I assume you used the classic amine formulation.

    If temps hit 60 or above, it should be good after 3 or 4 hours because dandelions are easy to kill. Heat , humidity, and sunshine help speed uptake.

    We've applied Trimec amine in drizzle on cloudy days and got excellent results - providing temps were 60 or above.
  7. NattyLawn

    NattyLawn LawnSite Bronze Member
    Messages: 1,643

    We've also found good results with Mec-Amine D when there's a little rain, especially in dry conditions.

    Try telling that to customers though.
  8. SpikeGT

    SpikeGT LawnSite Member
    from NW OH
    Messages: 74

    The temp was in the mid 70's. I used Trimec Classic. Thanks for all your replies. All the dandelions look like they're done for.
  9. Grandview

    Grandview LawnSite Gold Member
    from WI
    Messages: 3,251

    I have finished lawns in a drizzle and been OK. Even a down pour within 1 hour has not hurt results on occasion.
  10. garydale

    garydale LawnSite Senior Member
    Messages: 813

    I'm with Grandview on this one.

    We would tell the customer to check lawn in one week. If bad control we retreat.

    Almost never happens. The possible damage from overdosing with a retreat is not worth the chance.

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