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Cortaderia - move or not?

When I started our garden voyage last year, I stuck a Cortaderia in the central planter as shown below, I had no knowledge at all back then and have since learnt they are pretty invasive plants.

This autumn/winter, i need to work my way round that planter, lifting the plants and refilling the soil as it has dropped about 6", we were thinking of moving it from the planter to the real soil currently lurking under the white gravel along the fence.

My main concern is that i have read they like to put down runners and can pop up some distance away - knowing my luck in the middle of next doors lawn :neutral:

Should I move it or maybe get a big isolated planter for it somewhere  or something else???



  • AnniDAnniD Posts: 12,177
    I had to look up Cortaderia, l know it as Pampas Grass.
    They can grow to a fair size and the leaves are very sharp. I have helped next door neighbour with his over the years and they are big, tough things.

    Personally l would remove it from the planter and get rid of it altogether. If you're looking for a grass, there are many to choose from, such as Miscanthus or Stipa. The Knoll Gardens website will give you plenty of ideas.

  • Hostafan1Hostafan1 Posts: 34,743
    I agree with @AnniD. Way too big . 
    They're used to stabilise loose soil banks because of their huge root systems. 
    I'd get it out asap. 
  • Thanks all, 

    That sort of confirms my worries. It was a bad choice but we knew nothing back then :)

    I'll dig it out ASAP and bin it, plenty more fish in the sea.
  • Hostafan1Hostafan1 Posts: 34,743
    wrap it in sacking, or an old compost bag before digging it up. 
    The leaves, as @AnniD says are edged with tiny sharp spines. 
    And WEAR GLOVES ;)
  • Thanks

    Yes i have witnessed the leaves ;) 

    I'll give it a severe haircut then start digging, I do use riggers gloves on tough stuff.

  • Hostafan1Hostafan1 Posts: 34,743

    Yes i have witnessed the leaves ;) 

    I'll give it a severe haircut then start digging, I do use riggers gloves on tough stuff.

    Good plan. Good luck 
  • Ok, 90 mins of digging and it's out, what a root system!

    It was rooting into the wood frame of the planter as well.

    Luckily it only seems to have gone down about 10" and to around 36"dia.

    Question - are the cotton-thread root remnants likely to re-root or die off ?

    I'll get a sieve next time we visit the garden centre but ??
  • Hostafan1Hostafan1 Posts: 34,743
    I don't think they'll re grow, but just keep an eye on it. 
    I got a garden sieve on freecycle . It's one of those things that folk , literally, have hanging about the shed.
  • Yeah I keep an on places like that for the odd things but the plastic ones are only £3.95 so no big loss.
  • Hostafan1Hostafan1 Posts: 34,743
    I put in a " WANT "  for one , and had an offer within hours
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