I have St. Augustine grass and so are my neighbors. It all started with a
small area. After mowing the lawn, it took over in the past few weeks. All
my neighbors have no problem. I live in Southern California, United States.
I took samples to a few nursery and they have not clue. Please help.
Attached is the link to those weeds pictures:
https://picasaweb.google.com/breakpoint ... aD3w-eMgwE#
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- Joined: Mon Mar 21, 2011 10:35 pm
- Location: LOS ANGELES, SOUTHERN CALIFORNIA, U.S.A.
It may be johnsongrass: https://en.wikipedia.org/wiki/Johnson_grass. Pull it up by the roots when you can, before it goes to seed; a trowel or an asparagus knife will help dislodge the root mass. The plant spreads both by roots and by seeds.
Boiling water and/or horticultural-strength vinegar may also help; don't use Roundup, as some regions have reported glyphosate-resistant johnsongrass.
Cynthia H.
Sunset Zone 17, USDA Zone 9
Boiling water and/or horticultural-strength vinegar may also help; don't use Roundup, as some regions have reported glyphosate-resistant johnsongrass.
Cynthia H.
Sunset Zone 17, USDA Zone 9
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- Location: Left coast
My son's St. Augustine lawn has the same type weed/foreign grass growing in it. Looks like the same thing with the purplish roots. I took a sample to the local nursery and they could not identify it so we assume it is some type of grass from a neighboring yard. I pretty much just bent over and dug each one up individually and now there are a lot less of them. They do multiple very quickly so you just have to stay on top of them. I tried the chemical warfare routine which proved to be useless.
Good luck.
Good luck.