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Group 3 Clematis

Mark-EMark-E Posts: 182
edited February 2021 in Plants

I bought a group 3 clematis and was wondering if the ground isn't frozen, would it be ok to plant out now? Or best to put in the greenhouse and plant out later.

Thank you very much.


  • How big is it (pot size)? @MarkE1984
    If small (eg a 9 to 13cm dia. pot) then I would re-pot into a larger and especially deeper pot (eg a 5 litre or larger 'rose' pot) and grow it on for a year as they often don't survive planting out at that size.  If supplied in a larger pot, then I would say 'go for it' and plant it out (remember to bury it a little, so there is about 10cm of soil above the current top of the compost height in the supplied pot.)

    A trowel in the hand is worth a thousand lost under a bush.
  • Mark-EMark-E Posts: 182
    Hi Bob,

    Thanks for your help.

    The pot is 10cmx10cmx20cm deep. Would you pot this up, keep in the greenhouse over winter and then pot out this time next year once cut back?
  • Yes, that's exactly what I would do.  However, if it grows very vigorously over this spring and summer and the roots look like they are becoming restricted in the larger pot, then I would simply plant it out at that point.
    A trowel in the hand is worth a thousand lost under a bush.
  • Mark-EMark-E Posts: 182
    Great, thanks for the advice :)
  • FireFire Posts: 17,116
    edited February 2021
    I put mine into the garden soil in October and am hoping they are doing ok. I hope it will survive the ice. It was in a two litre pot. Two years old. Around one metre of growth. I am slightly concerned, though Taylors seem to suggest it should be fine.
  • FairygirlFairygirl Posts: 52,081
    It wouldn't really need to be in a greenhouse, but it's still a young plant if it's in that size of pot, so it would be better to grow it on for a while, and plant it out later, as @BobTheGardener says. Just keep it somewhere sheltered for now. If it's really filling the pot it's in, by about April/May, you could pot it on, and plant out in late summer or so.  
    Group 3s are very tough, and will grow quite quickly once the weather conditions improve.  :)

    Ice doesn't bother them @Fire, so don't worry. I wouldn't be able to grow them at all if that was the case  ;)
    It's a place where beautiful isn't enough of a word....

    I live in west central Scotland - not where that photo is...
  • Mark-EMark-E Posts: 182
    Great thanks @Fairygirl and @BobTheGardener for your advice.
  • Mark-EMark-E Posts: 182
    Sorry to be a pain, but we also have a Clematis Bourbon which we are planning to put in a large pot with a trellis behind for it to grow. It is currently in a pot 16cm dia by 17cm deep. It is showing signs of growth and roots coming out of the base.

    I just wanted to check if this would be ok to pot out now and also what size pot would be ideal for it to live in?


  • That is a dwarf variety, so should be OK in a pot.  This is Taylor's advice:

    A trowel in the hand is worth a thousand lost under a bush.
  • Mark-EMark-E Posts: 182
    Ok thanks @BobTheGardener, the link is useful.
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