Weed identification - South Central Pennsylvania
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    Weed identification - South Central Pennsylvania

    Hi folks,

    I've been all over the internet looking for a match for this invasive "grass" that's infiltrated my lawn. This past Spring, I went to a local lawn care retailer to buy some professional grade fert and weed killer. I'm tired of the Scott's 4 step plan as the only option from HomeDepot/Lowe's/etc. and since I have about 40,000 sq. ft. of lawn, I wanted something more cost effective.

    The place I went to sells to homeowner's, but also outfits a lot of local professional people as well. Also, my local Penn State Ag Extension office recommended them.

    Anyway, I have about 15000sq. ft section of lawn that was started to get invaded by this "grass". The place I bought my material from said to over-seed with a slit-seeder first, to try to establish more grass; then next spring, hit it hard with 2,4-D and kill off the weeds in the pre-emergence phase.

    Unfortunately, our weather didn't cooperate. I slit seeded everything in late April and temps were kind of low. Soil temps never really got up and going until late May and then summer hit. In summer time, this "grass" finally takes hold and proliferates like mad. Here are a few pictures.

    This one shows the grass tall, uncut. This stuff has spread over half my yard. I try to keep the wooded edges of my property cut, but some areas go uncut...and this is what it looks like at roughly 12-16 inches tall. The bottom two pics are cut at mower height of about 3 to 3.5 inches.

    Last week, I spread some pelletized 2,4-D and it doesn't seem too be affected at this stage. I've seen this stuff growing in dense shade, full sun...everywhere...doesn't seem to matter. Any thoughts or ideas are very much welcomed.

    Thanks.

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    John

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    Bubber's Avatar
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    I'm not sure what it is, but it grows in Georgia too.

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    AlKozak's Avatar
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    The fact that it is resistant to 2-4,D suggests that it is a grass and not a broadleaf. I would take a sample to your county cooperative extension and see if they can identify the species and a way to control it.

    Al
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    I have to check with my FIL when I get home from work, he has a name for it (probably not the official name though) but it's slipping the grasps of my memory. However, I know this about it, it will completely take over a field if left alone, and whatever you do do NOT till it. I ran our tiller over a pretty big patch of that and it just spread the roots all over and made things worse. It will devour our potato field, that's why we plant the winter rye and buckwheat on the unplanted portions of the field. In the fall we burn down the entire field with round up and turn it over and start over, that's the only way we have found to somewhat control it.

    Edit: Nutsedge, or Nut Grass, he has a couple of names for it, again, probably not the official grass growers guide but that's what he calls it and it's the same thing.......

    Edit again: We have many other more colorful names for that stuff.....

    Just sayin'
    Last edited by PJR832; 08-13-2018 at 02:07 PM.
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    This stuff is growing all over my woods and in my food plot.... Not sure what it is.....
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    Looks like Stiltgrass
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    Quote Originally Posted by voxombmx1 View Post
    Looks like Stiltgrass
    Agree. Looks more like stiltgrass. I have it growing in my woods and some of my mulch beds.


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    I really want to do something sooner than later. Glad (not that I want to wish this vile weed on anyone else) I'm not the only one that experiences it. My dad says its moved in from the South - I think him and a few guys were calling it "Creeping Charlie" or something to that affect...because it sure creeps into the lawn.

    I hate the thoughts of killing it all with round-up and starting my lawn over. I have thought about using round-up on the wooded edges. My thinking there is that the tall stuff goes to seed and continues to spread in my yard. If I kill it in the woods, it might help.

    Edit: No....it sure ain't creeping charlie...that's a smaller broadleaf of some sort.
    Last edited by JohnM45; 08-13-2018 at 03:40 PM.
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    Based off of a google search, I agree that it looks like stiltgrass.
    Acclaim Extra is labeled for post emergent control.
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    Stiltgrass HATES lime,, that is not going to help instantly,,

    Stiltgrass is an annual,, a heavy spring application of 2,4-D will stop the seeds from sprouting.
    I have had great results with that the past two years,,,

    I keep the stilt grass mowed short, and if it is the only thing growing in that spot, it gets Roundup,,,
    (gotta stop the seed production)
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