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Isotoma care

I planted an isotoma (the lavender coloured star shaped one) in a shady herb border and to my surprise it did so well I'd like to keep it there for next year.  Will that work, and what special care should I take please?


  • MobowMobow Posts: 92

    I've grown the blue one for the last two years outside in containers but have taken them into an unheated greenhouse in the winter as I wasn't sure how hardy they were.  I'm in South Wales, I don't know where you live.

    I also saved some seeds from them and sowed them in the spring just in case ......

  • sooty5sooty5 Posts: 107

    I  too would be interested to know if these will be hardy enough to withstand  winter in the west country . I fell in love with them this year , so pretty . 

  • MobowMobow Posts: 92

    I have had a look on RHS website and it says it is a perennial. Hardiness H3

    H3 - Hardy in coastal and relatively mild parts of the UK (-5 to 1) 

    So it maybe OK down there in South West but I wouldn't risk it here

  • sooty5sooty5 Posts: 107

    Thanks Mowbow , Maybe i'll pot up one or two and leave the others in . they were really cheap and have flowered there socks off all summer and still flowering now 

  • MobowMobow Posts: 92

    Hi Sooty,

    If you've got quite a few it'll be worth potting up one or two and leaving the others in. It will be interesting to see what happens

  • sooty5sooty5 Posts: 107

    Hopefully i'll remember , first to do it ( pot them on i mean ) !!! and secondly to let you know the outcome !!!

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