I have seen several threads on here about this stuff, but none seem to address a fairly severe case which I am facing. Besides ripping it all up and starting over (which may be the best option but would be a sizable job), what would you do if you were faced with a lawn that had a pretty severe case of this stuff in multiple large areas? There are other areas that appear to have none (yet). TIA.

Have you tried sedgehammer? I was about ready to give up earlier this summer after trying several products from home Depot that claimed to work on nutsedge with no success. Hit it with sedgehammer a couple weeks ago and it cleared up incredibly well.

Sedgehammer or any Basagran herbicide.

monument seems to still be the best. Sedge Hammer or Pro Sedge will give you an initial kill but they seem to return.

Also make sure you use a spreader/sticker and acidify the water to around a pH of 5.5

I have also been told that the best way is to use a good pre-emergent in the spring. Same goes for goosegrass, crabgrass and dallisgrass. Those with more knowledge than I can correct me if I m wrong.

While this is true, the only pre-emergent herbicides that are effective on sedges and kyllinga are pretty pricey.
Dallisgrass is a perennial and therefore no pre-emergent herbicide will be effective, as for crab and goose, you are correct.

So no one really knows, and the products we buy really don't work because they don't kill the nut part...any other suggestions that might work?

Here is what the interweb says...KILL IT WITH FIRE!!!



Gardens Alive!
"There is only one guaranteed, foolproof method to completely kill nutgrass," he recounts: "First, dig out every tiny piece of the plant including the seeds and nutlets. Make sure you sift the soil through a mesh screen. Dump the collected material on the driveway and burn it.

certainty
http://www.monsanto.com/products/pages/certainty-turf-herbicide.aspx

certainty is also a good option. Beware the dallisgrass suppression claims

I've had success with Sedgehammer. I need to buy some as our new place has nutsedge in the backyard.

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So no one really knows, and the products we buy really don't work because they don't kill the nut part...any other suggestions that might work?

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Monument and a good pre-emergent program will clean up the sedge. Most people are that dedicated however.

Thanks for the responses. Looks like I should try either Sedgehammer or Monument (with a surfactant) before taking the Colonel's advice and setting it ablaze.

I have been in a two year battle with this stuff. I have been using Image, but a month later it is back.

Where do you get Sedgehammer? Sounds like I need to give it a try.

I imagine folks will chime in with local options, but it appears to be available on Amazon.

I don't do much online shopping so I will look on Amazon. I would have never thought you could get something like that from them.

Image works for me

Most any farm store should have it as well.

Crabgrass and yellow nut sedge nearly made me go crazy last year. Sedgehammer took care of the nut sedge. Bought it on amazon.

I do have some more that needs to be killed this year but I'm assuming that's because nobody in this neighborhood knows how to kill it so the seeds are spreading to my yard.

I've got a whole ton of the stuff in my backyard (no grass) along with about 1 million other weeds. I was going to look into pulling them, but honestly it just isn't worth my time. I planned to kill it all with some Roundup. Do I need to supplement this with sedgehammer afterwards?

Also...will roundup from a year ago (stored in a detached garage with obvious temperature fluctuation ) still be good?

Sledgehammer to your nuts edge?

Atleast it's not square to the nuts, but the edge of your nuts would still hurt plenty...

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I've got a whole ton of the stuff in my backyard (no grass) along with about 1 million other weeds. I was going to look into pulling them, but honestly it just isn't worth my time. I planned to kill it all with some Roundup. Do I need to supplement this with sedgehammer afterwards?

Also...will roundup from a year ago (stored in a detached garage with obvious temperature fluctuation ) still be good?

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Roundup won't kill nut sedge. Yeah, this stuff sucks.

Maybe deserves it's own topic, but equally as maddening in my yard is the Virginia Buttonweed.

Anyone have a suggestion for that?

2-4 D doesn't seem to do too much.

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I've got a whole ton of the stuff in my backyard (no grass) along with about 1 million other weeds. I was going to look into pulling them, but honestly it just isn't worth my time. I planned to kill it all with some Roundup. Do I need to supplement this with sedgehammer afterwards?

Also...will roundup from a year ago (stored in a detached garage with obvious temperature fluctuation ) still be good?

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Roundup won't kill nut sedge. Yeah, this stuff sucks.

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Roundup (glyphosate) will kill it (and almost everything else) but you need a good surfactant. I just killed a bunch this spring with Gly.

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I've got a whole ton of the stuff in my backyard (no grass) along with about 1 million other weeds. I was going to look into pulling them, but honestly it just isn't worth my time. I planned to kill it all with some Roundup. Do I need to supplement this with sedgehammer afterwards?

Also...will roundup from a year ago (stored in a detached garage with obvious temperature fluctuation ) still be good?

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Roundup won't kill nut sedge. Yeah, this stuff sucks.

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Roundup (glyphosate) will kill it (and almost everything else) but you need a good surfactant. I just killed a bunch this spring with Gly.

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Could've sworn it didn't, but upon further research I guess it does. I guess it's just that other selective broadleef herbicides do not work against it.

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I've got a whole ton of the stuff in my backyard (no grass) along with about 1 million other weeds. I was going to look into pulling them, but honestly it just isn't worth my time. I planned to kill it all with some Roundup. Do I need to supplement this with sedgehammer afterwards?

Also...will roundup from a year ago (stored in a detached garage with obvious temperature fluctuation ) still be good?

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Roundup won't kill nut sedge. Yeah, this stuff sucks.

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Roundup (glyphosate) will kill it (and almost everything else) but you need a good surfactant. I just killed a bunch this spring with Gly.

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What do you mean by this?

A surfactant is a compound you add to a herbicide (in this case at least) that helps the quality of the application by lowering the surface tension. Basically it spreads the herbicide application better over the plant. Depending on what you use it can also help cut through a waxy type plant.

You often see B183 say "add Dawn detergent." the dawn is acting as the surfactant. I typically use an actual marketed surfactant like "Spreader Sticker."

Some high quality chemicals will already have a surfactant included and if they do it will be conspicuously listed on the label.

Whatever you use, a good surfactant will make your application MUCH more effective.

To add to that, you can buy nut sedge with or without surfactant already in the packet. I bought it with.

One gallon of Roundup at full rate
Surfactant
1/2 cup of ammonium sulfate 21-0-0
Will absolutely kill nut grass and anything else it comes into contact with.

http://aggie-horticulture.tamu.edu/travis/wp-content/uploads/2013/06/GoingNutsOverNutsedge2013.pdf

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I have seen several threads on here about this stuff, but none seem to address a fairly severe case which I am facing. Besides ripping it all up and starting over (which may be the best option but would be a sizable job), what would you do if you were faced with a lawn that had a pretty severe case of this stuff in multiple large areas? There are other areas that appear to have none (yet). TIA.

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Here's the chemical-free method. Reduce irrigation by about half. Immediately pull any with seed blooms. For the rest, focus on draining the energy from the nut. Just pull them up. Don't bother digging up the nut. Just pull out what you can. Growing new leaves will drain all the energy in the nut and leave it dead within a few treatments. Finally, a day or so after you weed, mow. Try to weed and mow every 4-5 days. Do this for 3 weeks and you should have dramatically reduced population.

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I have seen several threads on here about this stuff, but none seem to address a fairly severe case which I am facing. Besides ripping it all up and starting over (which may be the best option but would be a sizable job), what would you do if you were faced with a lawn that had a pretty severe case of this stuff in multiple large areas? There are other areas that appear to have none (yet). TIA.

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Here's the chemical-free method. Reduce irrigation by about half. Immediately pull any with seed blooms. For the rest, focus on draining the energy from the nut. Just pull them up. Don't bother digging up the nut. Just pull out what you can. Growing new leaves will drain all the energy in the nut and leave it dead within a few treatments. Finally, a day or so after you weed, mow. Try to weed and mow every 4-5 days. Do this for 3 weeks and you should have dramatically reduced population.

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I thought pulling nut sedge makes it come back worse

I understand that for some reason august/September is the time to spray nut sedge. I am not sure why one wouldn't do it in the spring and summer, but that is what I have been told. Also, I do think that surfactant is an absolute must because the leaves are too waxy to kill it without.

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I thought pulling nut sedge makes it come back worse

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Not in my experience. It spreads by growing nuts. It can't grow nuts if it has no leaves to gather energy.

I live in SoCal, had this (not knowing) and had turf put in. Company that installed ended up removing turf while we battled it for a while. Sedgehammer has worked the best, but still not totally gone.

Turf is reinstalled and I hit it whenever it grows out the sides. I assume this is a long term battle for me.

That stuff cracked the 4 inches of DG installed under the turf. Spreads like crazy under there.

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I thought pulling nut sedge makes it come back worse

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Not in my experience. It spreads by growing nuts. It can't grow nuts if it has no leaves to gather energy.

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Tell that to the lantana still spreading in the soil that I can't get rid of