Iron vs weeds

Discussion in 'Pesticide & Herbicide Application' started by RigglePLC, Sep 24, 2012.

  1. RigglePLC

    RigglePLC LawnSite Fanatic
    Posts: 12,235

    I heard something about this idea from Canada, where many herbicides have been banned for use on lawns.

    I was surprised to find some results in my iron treatments to stimulate darker green in grass. Another member asked if it killed dandelions. I discovered that, true, the iron solution killed dandelions. At the very least, it caused their collapse and turned them black.

    I used 8 ounces of 15 percent iron as ferrous sulfate per quart, intending to cover about 1000 sqft with the quart.

  2. Skipster

    Skipster LawnSite Bronze Member
    Posts: 1,074

    Check back in about a week. The chelated Fe product used in Canada (Fiesta) usually only discolors weeds for about a week. Then, you get full re-growth.
  3. phasthound

    phasthound LawnSite Platinum Member
    Posts: 4,584

    We applied Fiesta to dandelions twice in the spring as per label with very little regrowth.

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