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Invasive plant horror stories

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Hometalk member and gardener extraordinaire Barb Rosen recently wrote of her nightmare experience with chameleon plant, Houttuynia cordata, and what may be her life-long project of getting rid of it. But Barb surely isn't alone in having planted something she regretted. For me, my biggest mistake was planting gooseneck loosestrife, Lysimachia clethroides. I'd heard how "rambunctious" the plant could be, but I had a dry, shady spot where I couldn't get anything else to take hold and bloom. Well, the lysimachia did, and soon started looking for territory to annex. I've since sold the house and it may have taken over the entire property by now for all I know. Here's your chance to sound off and put up the warning flag about plants that belong on a "do not plant" list. Please post a photo if you have one, and let us know what zone you're in.
  • Sherry
    Sherry Canada
    on May 7, 2017

    I have stinging nettle that has colonized huge tracts of land, both sun & shade, where I raked up a thick layer of leaves. As soon as sun hit the soil, the nettle sprung to life from years of dormancy. I can't spray weed killer of any kind as it is on the bank of a protected creek. I tried vinegar diluted 50% with water, didn't phase it (actually seemed to like it and looks stronger!). I've tried pulling it, hoeing it under, cursing it to no avail. Any ideas?

    • Mpshotton
      Mpshotton
      on May 24, 2017

      Stinging nettle very good for "Admiral" butterflies, if you have them over there in the US. Cheers Myra from New Zealand (southern hemisphere, just right of Australia the largest island continent in the world).

  • Kim Taylor
    Kim Taylor Perry, IA
    on Jun 10, 2017

    Wild raspberry- I suppose that's why it's called wild...
    Iowa- zone 5?

    Loose- strife. The name sounds appropriate.

    Some of the plants mentioned repel mosquitoes- cat nip, mint, lemon balm.

  • Charlene cole
    Charlene cole Goodlettsville, TN
    on Jun 14, 2017

    Spiderwort has almost taken over the whole area in front of my house where I have shrubs and some flowering plants.

  • Karen Bushy
    Karen Bushy
    on Jul 19, 2017

    Crown Vetch...is now a mile away. PO threw seeds down our back hill to prevent erosion. It is everywhere and you can't walk through it!

  • Tracy Rust
    Tracy Rust Middleburg, PA
    on Aug 5, 2017

    Help! We have no idea how to get rid of a tall grey plant that has invaded our land on the
    Delaware River. A local landscaper says she thinks it is 'mugwort.'. It is traveling at the
    rate of an acre a year. We treasure this land and will be glad of any advice on how to get
    rid of it.

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