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    Lawn Care Treatment Program Question

    I use the Earl May lawn care program (6 bag) and have been thrilled with it over the past couple of years. The first bag includes crabgrass preventer. When I picked up my first bag yesterday I forgot to ask when I should apply it. Seems too cold and wet still but I have no clue if that is good or bad to be honest? Any suggestions for me? I don't mind stopping back at the store...but I thought I would check here first.

    Thanks!



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    Re: Lawn Care Treatment Program Question

    Wait until mid April when it warms up some. Also make sure you don't apply it to any areas that you want to reseed new grass. It prevents all grass from germinating.



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    Re: Lawn Care Treatment Program Question

    Quote Originally Posted by GrayerClone View Post
    Wait until mid April when it warms up some. Also make sure you don't apply it to any areas that you want to reseed new grass. It prevents all grass from germinating.
    Thanks. Yard was pretty strong last year so I don't have to reseed this spring. In the past I remember being told to throw it down when something about red-something was budding. I just can't remember what that "red-something" was...

    I take it that crabgrass doesn't germinate until mid-April then?



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    Re: Lawn Care Treatment Program Question

    I'm not an expert but I'm going to disagree with waiting until mid-April. Crabgrass can only be killed pre-emergent so I think you need to get it down at your first convenient opportunity. I might do mine this weekend now that the snow is melted.



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    Re: Lawn Care Treatment Program Question

    Quote Originally Posted by ruxCYtable View Post
    I'm not an expert but I'm going to disagree with waiting until mid-April. Crabgrass can only be killed pre-emergent so I think you need to get it down at your first convenient opportunity. I might do mine this weekend now that the snow is melted.
    Actually, there are a few products that kill crabgrass post emergent and they work quite well.

    A good rule of thumb for pre-emergent is apply when the forsythia bloom. Forsythia are the yellow flowered shrubs that bloom in spring. You don't want to apply pre emerge too soon or it breaks down not giving complete control throughout the season. Although, these days, pre emerges have greater windows.

    If you follow the forsythia rule you will be just fine. Seed germination is based on soil temps not time of the year so using plant indicators really helps as they react to weather conditions as well. Using a specific date will work but in years of odd weather, it will hurt you.

    To be honest, if you have a thick healthy lawn, you don't even need pre emergents. The turf will outcompete the weeds. It is only if you have voids or thin grass where weeds can creep in.


    Last edited by tazclone; 03-12-2010 at 08:25 AM.

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    Re: Lawn Care Treatment Program Question

    Quote Originally Posted by tazclone View Post
    Actually, there are a few products that kill crabgrass post emergent and they work quite well.

    A good rule of thumb for pre-emergent is apply when the forsythia bloom. Forsythia are the yellow flowered shrubs that bloom in spring. You don't want to apply pre emerge too soon or it breaks down not giving complete control throughout the season. Although, these days, pre emerges have greater windows.

    If you follow the forsythia rule you will be just fine. Seed germination is based on soil temps not time of the year so using plant indicators really helps as they react to weather conditions as well. Using a specific date will work but in years of odd weather, it will hurt you.

    To be honest, if you have a thick healthy lawn, you don't even need pre emergents. The turf will outcompete the weeds. It is only if you have voids or thin grass where weeds can creep in.
    Wow, now THIS is damn good info.



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    Re: Lawn Care Treatment Program Question

    Quote Originally Posted by tazclone View Post
    Actually, there are a few products that kill crabgrass post emergent and they work quite well.

    A good rule of thumb for pre-emergent is apply when the forsythia bloom. Forsythia are the yellow flowered shrubs that bloom in spring. You don't want to apply pre emerge too soon or it breaks down not giving coplete control throughout the season. Although, these days, pre emerges have greater windows.

    If you follow the forsythia rule you will be just fine. Seed germination is based on soil temps not time of the year so using plant indicators really helps as they react to weather conditions as well. Using a specific date will work but in years of odd weather, it will hurt you.
    I agree that waiting till the ground temp warms up is a great idea. Most grasses germinate when soil temps are between 50-60 degrees. Right now in central IA they are just slightly above the freezing mark. IMO there is no reason to apply just yet as there needs to be a stretch of warm weather before you need to worry about germination.

    http://extension.agron.iastate.edu/N...mphistory.html Here is a link that shows current and recent history of soil temps at a 4inch depth.


    Good Luck


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    Re: Lawn Care Treatment Program Question

    Quote Originally Posted by CykoAGR View Post
    I agree that waiting till the ground temp warms up is a great idea. Most grasses germinate when soil temps are between 50-60 degrees. Right now in central IA they are just slightly above the freezing mark. IMO there is no reason to apply just yet as there needs to be a stretch of warm weather before you need to worry about germination.

    http://extension.agron.iastate.edu/N...mphistory.html Here is a link that shows current and recent history of soil temps at a 4inch depth.


    Good Luck
    Be careful, you talk soil temps/degree days/ germination with typical homeowners and there eyes will roll back in their heads. I mean we could really talk about how they could not use winterizers and instead just put down potash and then follow up with a spring nitrate based N application when soil temps were 43 for maximum root producttion.



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    Re: Lawn Care Treatment Program Question

    Quote Originally Posted by tazclone View Post
    Actually, there are a few products that kill crabgrass post emergent and they work quite well.

    A good rule of thumb for pre-emergent is apply when the forsythia bloom. Forsythia are the yellow flowered shrubs that bloom in spring. You don't want to apply pre emerge too soon or it breaks down not giving complete control throughout the season. Although, these days, pre emerges have greater windows.

    If you follow the forsythia rule you will be just fine. Seed germination is based on soil temps not time of the year so using plant indicators really helps as they react to weather conditions as well. Using a specific date will work but in years of odd weather, it will hurt you.

    To be honest, if you have a thick healthy lawn, you don't even need pre emergents. The turf will outcompete the weeds. It is only if you have voids or thin grass where weeds can creep in.
    OK...now I need to do a google image search for "forsythia"! No idea...



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    Re: Lawn Care Treatment Program Question

    Quote Originally Posted by ruxCYtable View Post
    I'm not an expert but I'm going to disagree with waiting until mid-April. Crabgrass can only be killed pre-emergent so I think you need to get it down at your first convenient opportunity. I might do mine this weekend now that the snow is melted.

    I completly agree. The earlier you get it down the better.



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    Re: Lawn Care Treatment Program Question

    Last year I switched from the Earl May brand fertilizer to the Menards brand. I liked Earl May but it is very expensive. Honestly, I couldn't tell any difference between the two. That is besides the price.



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    Re: Lawn Care Treatment Program Question

    Quote Originally Posted by Sterling4Cy View Post
    I completly agree. The earlier you get it down the better.
    No. Preemergence herbicides, especially those used in lawns, breakdown naturally in the soil over a short period of time. It would be a waste of money to put it out now. As someone said above you need to wait until soil temperatures are higher (ie. seeds able to germinate) before applying preemergence herbicides.


    EDIT: Attached (abbreviated) herbicide label for the active ingredient of the crabgrass preveter product. Includes map for approximate crabgrass germination dates by region. You will want to apply about 2-weeks prior to that date (given average temperatures). Rainfall/Irrigation is essential to active the herbicide and get it into solution for uptake by germinating seed.
    Attached Files Attached Files


    Last edited by ISUAgronomist; 12-20-2011 at 05:13 PM.


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    Re: Lawn Care Treatment Program Question

    Quote Originally Posted by Sterling4Cy View Post
    Last year I switched from the Earl May brand fertilizer to the Menards brand. I liked Earl May but it is very expensive. Honestly, I couldn't tell any difference between the two. That is besides the price.
    It seems a little bit more expensive than in past years. With the $50 gift card I will receive for purchasing a yard treatment factored in...I spend about $200 for a 6-bag/application program for a 10,000 square foot yard. I don't mind $200 as it covers the entire year.



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    Re: Lawn Care Treatment Program Question

    Quote Originally Posted by Sterling4Cy View Post
    I completly agree. The earlier you get it down the better.
    Not correct. If you put it down too early, it will break down and not give you full season coverage.


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    Re: Lawn Care Treatment Program Question

    Here you gohttp://blog.silive.com/weather/2009/04/forsythia.jpg

    You will know what I am talking about when you see them this spring. Or check soil temps in the 3" range When it is around 50 degrees throw it out.


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