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How high to make trellis

LatimerLatimer Latimer, BuckinghamshirePosts: 778
edited June 2020 in Problem solving
Hi all

I have this container 53cm diameter, 75cm deep into which I am looking to plant a Clematis and a rose. I already have a Comtesse du Buchard Clematis that's doing quite well in a small pot which is like to use. I haven't chosen a rose yet. The wall is South East facing.

Realistically how high will I be able to get containers plants up this wall. I'd like to train it across the top of the doors and windows if possible. Is that realistic? I don't want to make a trellis that is empty!



  • KT53KT53 South WestPosts: 6,971
    If you get one of the more vigorous varieties of rose or clematis they will certainly cover trellis over the area you want.  The important thing is to ensure you feed the plants regularly as they will remove the nutrients even from a big pot like that.
  • LatimerLatimer Latimer, BuckinghamshirePosts: 778
    Thanks @KT53
  • LatimerLatimer Latimer, BuckinghamshirePosts: 778
    Ok, so can I check if this is going to work? I've made the trellis from cedar I already had but I'm worried the Clematis is too "fine" for such a chunky trellis. I've tied it in but should I run some wire horizontally between the slats for it to cling to?

  • edhelkaedhelka GwyneddPosts: 2,264
    edited June 2020
    This is a nice big pot so I would say realistic, obviously with regular watering and feeding. Although I would consider coating/sealing it inside with something because terracotta can lose moisture quickly.
    Also, I would do trellis for the bottom part only and use tensioned wires above the doors and the window.
  • LatimerLatimer Latimer, BuckinghamshirePosts: 778
    @edhelka thanks! As you can see I've already planted up so too late to seal the pot, which is a shame.

    As for the trellis, what's the reason behind wires above the door? I've not actually completed it yet so it's something I could do, I'm just curious why you suggest it?

  • edhelkaedhelka GwyneddPosts: 2,264
    Because they are easier to use, invisible and cheaper. Also won't rot. But if you prefer the look of a trellis, go for it. It looks lovely with the companion pots.
  • KT53KT53 South WestPosts: 6,971
    Running twine diagonally between cross pieces will provide something for the clematis to grip as it grows.  Once established you won't see them anyway.
  • LatimerLatimer Latimer, BuckinghamshirePosts: 778
    @edhelka thanks 😊

    @KT53 I ran some wire around, though I put it vertically, is it going to struggle to grip a vertical wire?
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