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Obelisk - inside or outside

I have recently got a clematis so once its established I will need to transplant it.

i have my metal obelisk ready but does the plant go inside the obelisk or outside? Part of me says inside it so it can grow around it, but the other part says that will make it harder to get to for pruning etc if required. Ive had a google at images and cant see if the plants are inside or outside the structure

its a group 3 so will need to be cut back every year.

over to the experts 🙂

Posts

  • K67K67 Posts: 2,506
    If it's group 3 it really doesn't matter as all you need is access to the base of the stems and they usually grow out from one spot but if you want to train it round the obelisk outside would be easier.
  • ObelixxObelixx Posts: 30,090
    It depends on the design of your obelisk and how easy it is to get your hands inside to prune and then it also depends on what pruning group for your clematis.   

    Group 1 only get pruned after flowering to tidy up and keep them in bounds and, when older, renew vigour by cutting out the oldest stems at the base.

    Group 2s make their first flush of flowers on old wood so you just prune back after that first flush to keep them tidy, dead head and take out wayward stems.  Then you fee them well and they should produce a second flush in late summer. 

    For these two groups it makes no odds whether you plant inside or outside the obelisk.

    Group 3s get pruned back hard in March and then fed and they then produce a hole new set of stems that flower in summer so, for these, you need to be able to get to their base and also be prepared to train in all the new stems so they climb round your obelisk.
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  • Even though it’s easy to get at inside the obelisk, I think it will be easier on the outside then just because it’s less fiddly and means I can train the stems as they climb
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