"desirable" plants that become invasive monsters

VerdunVerdun Posts: 23,348
Last summer I bought artemisia Silver King that sent out shoots over a 4 or 5 feet area in a few weeks. I knew it was invasive but reckoned I could control it by digging up every year but I loved its foliage. So too with Artemisia Orientale Limelight....this suckered everywhere and it took 3 years to finally eradicate it. Euphorbia Fireflow too is a thug for me. I carefully look into every plant before I plant it now. What other "desirables" have become thugs?
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  • ObelixxObelixx Posts: 10,650

    Helianthus lemon Queen is a bit exhuberant in my garden and I may have to get ruthless with it this year.  Phlomis Russeliana is self seeding very happily and so needs rooting out a bit this year and lysomachia clethroides alba needs lifting, dividing and giving away as it's a bit too happy.    Cornus Midwinter Fire is a suckering thug.  I moved one shrub a couple of years ago but must have left bits of root behind so 18 months ago I dug up 12 new babies and transplanted them elsewhere and into pots and blow me if it hasn't popped up again in its original site.

    The Vendée, France
  • nutcutletnutcutlet Posts: 24,244

    That'll be the pennisetum. and the blue comphrey, and the big native comphrey, though that's by seed not root. woodruff, a pink willowherb that I was told wasn't invasive, a white aster, one of the bugles. But not your euphorbia, that's no bigger than when it started.

  • Caz WCaz W Posts: 1,353

    Crocosmia image

  • BerghillBerghill Posts: 2,826

    Everything that does not die.

  • nutcutletnutcutlet Posts: 24,244

    and acanthus and macleaya and one I can't remember the name of, lamiaceae, mauve, 18"- 2', seed heads very attractive like little steps up the stalk, seeds every where and has very resistant roots, even when quite young. And, reminded by obelixx, all the lysimachias. I may not have finished yet.

  • nutcutletnutcutlet Posts: 24,244

    That is particularly naff isn't it, especially when it's in too dry a spot. Never goes away and never looks good then and most of my spots are too dry.

    I've remembered the name of the mauve invasive plant. Scutellaria altissima

  • LeggiLeggi Posts: 489
    I have a deep rooted hatred of Lavatera Barnsley, probably comes from my first garden 'job' of digging three of the beasts out of my parent's very small back garden. Hacking them back when they got too big was about the only gardening I ever witnessed as a child.
  • Most plants with the world 'Japanese' as part of their comon name .Apart from the obvious Japanese knotweed (which invaded one garden I had),  Japanese honeysuckle (lonicera japonica) and Japanese anemones come to mind. Yet they are beautiful plants and Japanese anemones were recently recommended by Carol Klein as her plant of the week. i still grow J anemones and love them.There is also a beautiful fuchsia-like plant whose name I can't remember at the moment but is Japanese something.It was stunning for a couple of years then began to spread like mad and became straggly and invasive and almost impossible to remove. Really, anything that spreads by underground runner or that will grow from a little bit of root left in the ground. False nettle (lamium) is a complete pest in my garden. I introduced it when I knew virtually nothing about gardening (not long ago, then). All these plants seem to be particularly valued by herbalists, though.I once had a garden where lily of the valley had virtually taken over and I pulled them out like weeds.

  • Also  borage

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