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Infested lawn...

Discussion in 'Pesticide & Herbicide Application' started by gulfjoe, Mar 27, 2013.

  1. ted putnam

    ted putnam LawnSite Platinum Member
    Messages: 4,722

    Once it has been watered in either through irrigation or rainfall, MOW it. Watch how fast the weeds die then...A weed must be growing to die(as crazy as that sounds). Once they are somewhat mature or have flowers or seeds on them, they are just sitting there. You have to force them to grow. Mowing them off will force them to grow.
  2. greendoctor

    greendoctor LawnSite Fanatic
    Messages: 10,003

    Ted is right. Weeds that are not growing will simply hibernate through an application of sulfonylurea herbicides such as Celsius. That is why a lawn must have adequate water, fertilizer and the correct mowing procedures prior to my treating it. The period after treatment is not the time to starve the lawn or dry it out either. Without all three things in order, results are partial at best, and there is a risk of damage with the heavier products such as metsulfuron or Monument.
  3. wildstarblazer

    wildstarblazer LawnSite Bronze Member
    Messages: 1,046

    Here are a few pics I took of a yard full of weeds. I sprayed march 15th using celsius, octane and mso. the first two are the day I sprayed and the last two are 2 weeks after. March 15 - March 29.





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