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How to Kill Nutsedge, Wild Onion, Wild Violet and Other Tough Lawn Weeds

June 13, 2014

Ortho has a great way to kill tough lawn weeds like Nutsedge, Wild Onion, Wild Violet, Ground Ivy, and about 50 others including Dandelion and Clover without harming your good grass.  Ortho Nutsedge Killer for Lawns can be used on most any kind of lawn (Note:  This product is available for sale in all states except New York.)

Ortho Nutsedge Killer for Lawns comes in two kinds of sprays.   If you only have a small patch of weeds you are trying to kill, there is a ready to spray squeeze trigger bottle (click here to check it out).  If you have a big area with lots of lawn weeds it comes in a spray bottle that attaches to the end of your hose (click here to check it out).

It is best to spray weeds when they are actively growing.  If your lawn is stressed from drought and weeds are not growing very much, wait to spray when your lawn is getting regular rain or irrigation.

You think you are getting rid of Nutsedge (also called Nutgrass) because it is easy to pull. However, it quickly grows back from the bulb-like roots that are left behind in your soil.

You think you are getting rid of Nutsedge (also called Nutgrass) because it is easy to pull. However, it quickly grows back from the bulb-like roots that are left behind in your soil.

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  1. Todd permalink

    Hi Ashton,

    It is like you are reading our minds. I was just sitting here this morning getting ready to comment on one of you older posts about ridding my lawn of some weeds. I applied some Ortho Bug B Gone last week to kill off some ants after you recommended it and it has worked great.

    Now both sides of my property are being invaded from my neighbors yards. I have clover and what appears to be chickweed. So can I use this right now to spray those areas? I put down Scotts Weed and feed on May 17th. Can I use some of this spray now?

    Thank you

    • Hi Todd
      Yes, you can spray with Ortho Nutgsedge Killer now if you still have some of these weeds hanging on. The Weed & Feed generally takes about 3 weeks or so to completely kill the weeds. However there are some kinds of clovers and a chickweed look a like called Veronica that can be harder to kill. This product will work on these tough to kill weeds. Good luck with your lawn.

  2. Hello Ashton. I live in south Louisiana and I recently tilled my yard and added AL sulfate to my dirt after having my soil tested. I had my yard leveled and planted La Paloma Bermuda and SR9554 Bermuda grass seed. It’s only been a few days since I planted and the seeds are already sprouting up nicely. Unfortunately weeds are flourishing as well. Do you have any suggestions for a weed killer that can be used on very young lawn that won’t disrupt the Bermuda growth?

    • Hi grantness24
      Your Bermuda seedlings are too sensitive to weed controls until they achieve enough growth to be mowed 4 times. Your new Bermuda will win the battle with weeds with regular feedings at 2 month intervals until fall and a weed control once the grass is old enough.

  3. Lan Hasper permalink

    It is now the end of summer and my lawn has grass spots that have darker color than the rest of the lawn. Please advise what is the reason for this and how to prevent this from happening. I fertilized lawn with Scott turf builder in late spring. Thanks.

    • Hi Lan Hasper
      A variation in green grass color can be a result of different kinds of grasses, in other words, some grasses are darker green during certain times of the year than other kinds of grass. If you have a mixed lawn this could be the case. It also could be that parts of your lawn dry out faster than other parts causing the grass in the dry area to appear darker green before going dormant. There are other physiological conditions that can cause this. You are approaching the fall season when your next feeding of Turf Builder will even out the color in your lawn. Each feeding lasts about 2 months.

  4. Hi appreciate knowing what are the 50 weeds the nutsedge killer does kill.
    it really doesnt serve any purpose to say it kills 50 weeds when the article then lists only 3 or 4. the orther container doesnt even list one weed it kills

    thank yoiu

    • Hi Dukensern
      Here is the weed controlled list from the product label. Hope : Green Kyllinga, Purple Nutsedge, Yellow Nutsedge, Globe Sedge, Cylndrical Sedge, Surinam Sedge, Texas Sedge, Bittercress, Black Medic, Buttercups, Carolina Geranium, Carpetweed, Common Chickweed, Mouseear Chickweed,Cinquefoil, Clover, Cudweed, Dandelion, Curly Dock, Evening Primrose, Fiddleneck, Filaree, Goldenrod, Ground Ivy, Henbit, Prostrate Knotweed, Kochia, Lambsquarters, Lawn Purweed, Common Lespedeza, Common Mallow, Parsley piert, Pennywort, Redroot Pigweed, Smooth Pigweed, Tumble Pigweed, Pineapple Weed, Broadleaf Plaintain, Buckhorn Plantain, Narrowleaf Plantain, Puncture weed, Common Purslane, Florida Pusley, Redweed, London Rocket, Pennsylvania Smartweed, Red Sorrel, Speedwell, Prostrate Spurge, Spotted Spurge, Spurweed, Star of Bethlehem, Velvetleaf, Wild Violet, Wild Garlic, Wild Onion, Creeping Woodsorrel, Yellow Woodsorrel
      Hope your weed is on the list!

  5. Linda permalink

    I bought a home and the rear lawn is nothing but weeds of all types. I put down lime and then weed and feed. Waited a few weeks and then something to kill the mobad. Moss was everywhere! I have been thatching moss for over a month. Also waited and put down crabgrass treatment. Still highly invaded with nuthedge, clover and wild violets. If I use nuthedge will I finally get a handle on this mess. Then when is it safe to replant grass? I have about a 1/4 acre in the rear to correct. The front and side yards also need some attention but they are not nearly as bad. Help

    • Hi Linda
      You have a wide range of issues with the lawn you inherited with your new home. Based on what you are telling me I believe the previous owners did not feed this lawn very much and that your back yard has a fair amount of shade. I reach this conclusion because of your citing moss as a problem. Lime will help raise the soil pH to a less acidic state, however this is a slow process. We generally see moss because of shade, excessive moisture, low fertility and acidic soil conditions. Since you have already put down weed & feed and crabgrass preventer, you will need to wait till fall to seed. Give me your location and I will suggest an approach that could work for your situation. And let me know how much sunlight this lawn area receives each day.

  6. Gisella permalink

    Will Ortho’s Weed Be Gone work with speedwell? or do I need to use Ortho’s Nutsedge killer? Thank you!

    • Hi Gisella
      Both Ortho Weed B Gon MAX plus Crabgrass Killer and Ortho Nutsedge Killer should take care of your Speedwell (also known as Veronica). The new Roundup For Lawns product will also take care of this weed. There are lots of types of Speedwell so hopefully you will be able to get the job done with one of these weed controls.

  7. Gisella permalink

    Also, I have used Ortho’s Nutsedge Killer with a lot of success with Wild Garlic but so-so with Wild Violets — some die and others just shrug it off. Because I have a young cat that wanders throughout the yard, I try to spray (pre-mixed) in the early evening and when rain is in the forecast for the next day or at least 3-4 hours from the time I spray. Any ideas why it works very well on some of the wild violets and the others just shrug it off? Thanks again!

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