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How late will you spray for weeds

Discussion in 'Pesticide & Herbicide Application' started by lqmustang, Oct 6, 2005.

  1. lqmustang

    lqmustang LawnSite Senior Member
    Messages: 620

    Or better yet, at what point as the temperatures drop do you find control drops off and is not as effective due to less active growing cycle? I'd like to gear this more toward broadleaf weed control in cool season (bluegrass, fine fescue) turf types. Thanks in advance.
  2. Grandview

    Grandview LawnSite Gold Member
    from WI
    Messages: 3,251

    I will be spraying at least the first week of November. As long as the ground is not frozen and day time temps reach 40, I find broadleaf weed control to be good.
  3. GreenUtah

    GreenUtah LawnSite Senior Member
    from SLC, UT
    Messages: 866

    Frost certainly takes it's own toll on annual weeds,so you have to ask at a certain point why you would waste a chemical app on what mother nature is going to do for you anyway. I generally will stop herbicide apps when daytime temps drop into the 50s and overnights below freezing, to stay and move toward winterizing fert apps, on cool season grasses expected to take a snow load at some point.

    TURF DOCTOR LawnSite Silver Member
    Messages: 2,138

    The customer is paying for the service right how are you wasting a chemical app.
  5. ArizPestWeed

    ArizPestWeed LawnSite Bronze Member
    Messages: 1,457

    It may be irrisposible to apply if it's not needed .
    Luckily , in Arizona , we have weed all year round .
    Lots of rocket and filaree in winter here
  6. GreenUtah

    GreenUtah LawnSite Senior Member
    from SLC, UT
    Messages: 866

    You are not only wasting a chem app in that situation, you are doing your customer a disservice by not advising them that will be the chain of events. I never apply just to get an app in. You do what's right for the plants in your care.
  7. philk17088

    philk17088 LawnSite Fanatic
    Messages: 17,386

    I agree to a point but I need that revenue to live.
    If it isn't in violation of the label, I'll do it.
  8. lawnservice

    lawnservice LawnSite Senior Member
    Messages: 589

    me, i'll spray till around 2:00pm

    then I'll want to beat the traffic back to the shop
  9. Grandview

    Grandview LawnSite Gold Member
    from WI
    Messages: 3,251

    Frost doesn't kill dandelions, clover, and other perenial broadleaf weeds. Applying a herbicide in late fall provides for a weed free lawn in spring.
  10. kcchiefs58

    kcchiefs58 LawnSite Member
    Messages: 54

    Frost may not kill them, but will the weeds take in the chemical? I don't think so and then most herbicides are for 50 plus degrees according to the labels, but speed zone i believe says 40 on it. If it freezes I think it is a waste of money but it is your buck.

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