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I have a viney weed growing in my yard. Weed and Feed doesn't seem to affect it. It's slowly spreading to more and more of my yard every year. What is it, and how do I kill it?

viney weed

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5 Answers 5

up vote 8 down vote accepted

Looks like Ground Ivy or Creeping Charlie.

Control requires persistence via Michigan State University Turfgrass Science

Click below images to enlarge...

mound of weeds growing over a rock purple flower

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For killing weeds in an established lawn, a Weed Spray is usually the easiest way. A weed spray kills weeds without harming grass (provided the grass is healthy).

I've had good luck with Spectracide, but the Ortho product mentioned in here works well too. The Spectracide label says it kills Ground Ivy, so it should work on your weed.

Some tips:

  • Note that a targeted weed spray is a different than a general pourpose herbicide like RoundUp. Don't get them confused, or you will have a dead lawn. Read the label! If you are really cautious, look up the active ingredients and see what they do (Google them).

  • If you have a lot of spraying to do, consider buying a Pump Sprayer. The squeeze trigger bottles will cramp your hand if you have a lot of spraying to do. You can also re-use the pump sprayer for other things like bug spray and deck cleaner.

  • Big established weeds will take a long time to die. It will probably also require multiple applications of the spray (spaced several weeks apart, read the label). Try plucking/cutting the Ivy so the spray doesn't have as much work to do.

  • If you get "holes" in the weeds (e.g. by ripping pieces off), you get an entry point for the spray into the plant's "bloodstream".

  • After the weeds are dead, you may have bare spots in your yard where they were growing (or just big chunks of dead ivy.) You may need to re-seed those spots, but wait a while. The weed spray can interfere with new grass. It's also best to plant grass in the fall anyway.

Weed and Feed products and weed preventers like Preen are usually pre-emergent, meaning they don't kill stuff that is already growing (check the label). That's why you usually only apply them early in the year, before the weeds can germinate. The Sprectracide spray I suggeseted also contains a pre-emergent weed preventer (not sure about Ortho).

To make life easier in the future, try to stop the weeds before they get too big. Use a weed preventer, and spray/pluck them early.

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I suspect most weed and feed products will be pre-emergents, meaning you need to get it in your lawn before the weed seeds have a chance to germinate, which is a limited window. Once something like this is already growing, you're usually left with the round-up type of products, which kill everything they touch, or hand pulling.

After a long day in the office, sitting outside on a nice day, pulling weeds, can be therapeutic. Just make sure you get as many of the roots as possible. And with viney or runner spreading weeds, try to get the entire runner.

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3  
I have also had a lot of success against weeds by just going outside and pulling one or two a day. Before you know it, they're all gone. –  Jeff Widmer May 10 '11 at 2:16
    
+1 For the effectiveness & power of hand-weeding (a little bit each week will eventually reap huge! rewards). –  Mike Perry Oct 14 '11 at 15:51

I have had some pretty good success with Ortho Weed-B-Gon Max. I have used it on crabgrass, clover, and wild onion and it does a pretty good job. Pretty much I have used it for spot treatment in small areas but you can also use it with a sprayer to spray a larger area.

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Round up! Careful with it though - it kills anything it touches. You can put it on with a foam brush to be more selective than spraying.

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