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Invasive plant horror stories

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.
  • Marta Schulenburg
    Marta Schulenburg Medford, OR

    Horseradish and Jerusalem Artichoke. I have clay soil and it just doesn't come out all the way. Need a backhoe (I'm serious). Lemon Balm was already mentioned, English Ivy, Vinca and mint. All horrible opponents in my little one acre patch of

    • Jane Browning
      Jane Browning Summit, NJ

      Oregano and the worst is goutweed. I need a professional now to get rid of it. It's killed most of my native plants and is working its way into the woods.

  • Cindy Reynolds
    Cindy Reynolds Marshall, IL

    I love this plant...was warned it could be invasive so planted it in it's own part of the yard....it does take over bigger area each year....but it is so pretty....it multiplies....but I have no problem with it since it is off by itself....

  • Sherry
    Sherry Canada

    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

    • Mpshotton

      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

    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

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

Inspired? Will you try this project? Let the author know!