vicious, hard to identify texas lawn weed

jbrowerAugust 5, 2013

Ok, I give up. I've been all over the web, searching images, univ agriculture pages, commercial sites, etc. trying to identify a vicious weed I'm fighting with hours every week.

I have found one guy who posted a pic, but nobody answered him:

http://www.permies.com/t/15983/lawn/identifying-weed

This is the *only* pic I've found. What is this weed?

Characteristics
-taproot
-thin, small, narrow, somewhat curly leaves
-very small yellow and white flowers
-prostrate -- grows in tufts or mat forming
-easily dominates Bermuda grass -- just kicks its ass
-loves heat (sun or shade)
-NOT spurge or knotweed, please study the pic carefully

Location / Yard
-Plano, Texas
-Bermuda grass

In 7 years, I've never seen this before. It's as if an invasive species was brought into our neighborhood on an as-yet-unknown vector. Two of my neighbors have been completely overrun -- they have little grass left. I'm barely holding my own by digging this thing out every weekend.

I would normally never use chemicals -- but in this case, I need to know what the dang thing is and what I can use on it. Otherwise it's just a matter of time until more neighbors get overrun, seeds are blowing everywhere, and I can no longer keep up.

Thanks everyone in advance for your advice.

-Jeff

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Tiffany, purpleinopp GardenWeb, Z8b Opp, AL(8B AL)

. It's not a very good pic. Can you show a pic of your own?

    Bookmark   August 6, 2013 at 10:13AM
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jean001a(Portland OR 7b)

Please post an image of your own weed. If you can't do it, perhaps a neighbor/friend/relative can help you.

    Bookmark   August 7, 2013 at 8:34PM
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jbrower

More images are here:

http://s21.postimg.org/5k2a5k2lz/matweed1.jpg
http://s13.postimg.org/6ftcx9ymf/matweed2.jpg
http://s21.postimg.org/edz0u5mfb/matweed3.jpg

The first one shows the flatness and slightly blue-green color that helps this weed hide in Bermuda grass. The second shows the leaves are clearly not spurge or knotweed. The third shows a section of my neighbor's yard, which has been overrun in about 4 weeks time -- the weed is very aggressive.

Still the best image is the one in my original post. I posted that one because a) it's a better closeup than what I can do with my cameras, and b) it is -- as I mentioned -- the only matching pic I can find anywhere on the web. No one could identify his pic either, which is a big part of my concern.

Thanks.

-Jeff

    Bookmark   August 11, 2013 at 4:27PM
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lisanti07028(z6NJ)

Have you contacted your county's agricultural agent? Texas seems to take invasive plants much more seriously than most states, so your agent might be interested in an unknown, and might know what has shown up recently. The only thing I could find that is similar to what you've got is peganum harmala, African Rue (aka Syrian Rue). Dotted bridal veil (gibasis pellucida) also caught my eye, but I think the leaves are wrong.
I hope that someone more knowledgeable will be able to help, but I still think a call to the county agent may be of help. Good luck with this.

This post was edited by lisanti07028 on Sun, Aug 11, 13 at 22:09

    Bookmark   August 11, 2013 at 6:36PM
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lisanti07028(z6NJ)

I have tried twice to edit this, to no avail. The names of the plants are peganum harmala and gibasis pellucida. I apologize for the typos.

    Bookmark   August 11, 2013 at 10:10PM
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jean001a(Portland OR 7b)

Use this map to locate your county's Extension Service office
http://www.csrees.usda.gov/Extension/

Here is a link that might be useful: locate your county's Extension Service office

    Bookmark   August 12, 2013 at 1:00AM
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Tiffany, purpleinopp GardenWeb, Z8b Opp, AL(8B AL)

Your new links:



    Bookmark   August 12, 2013 at 7:39AM
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lisanti07028(z6NJ)

I hope that you are still checking in - this thread (link below) just got resurrected, and I wonder if this is what you're dealing with. Take a look.

Here is a link that might be useful: GW posting on slender aster

    Bookmark   September 5, 2013 at 9:15PM
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eline65(9)

Wiki

Here is a link that might be useful: Slender Aster

    Bookmark   September 6, 2013 at 9:27PM
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eline65(9)

Wiki

Here is a link that might be useful: Slender Aster

    Bookmark   September 7, 2013 at 1:59PM
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Betty.123

purpleinopp. please tell me the name of the weed in #2

    Bookmark   September 15, 2014 at 5:00PM
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Tiffany, purpleinopp GardenWeb, Z8b Opp, AL(8B AL)

I'm sorry, IDK what it is. You might want to compare it to Polypremum procumbens, but it may be something else.

    Bookmark   September 16, 2014 at 9:34AM
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