I grow them up obelisks,the stems are big,so are the flowers, unfortunately I don't have any pictures from last year. Canes wouldn't be sturdy enough for the perennials.if you or anyone you know is any good at DIY, the ones my hubby made are a good bet, although I am a sucker for s bit of rusty metal. Trouble with buying cheap obelisks is they will snap one day under the weight, unfortunately.usuallly when planted up!
You could maybe plant the Lathyrus next to the tree, if you can find a suitable spot, and then train it towards the trunks. Filling the centre with soil is just inviting rot and you might end up losing your tree.
No don’t put soil there ... you’ll damage the tree. It looks as if it was cut back hard / coppiced years ago and it threw up several shoots/rods which are now the size of trees ... but they all come from that bole at the base which will suffer if covered with soil.
Gardening in Central Norfolk on improved gritty moraine over chalk ... free-draining.
I just make a wigwam with some bamboo poles from the excess bamboo I cut out each year in my garden. See image below. These are annuals so not sure if such thin bamboo poles would do for perennials.
Please Ignore the uncut grass and the bed which has recently been turned over waiting for warmer weather to plant out the bedding plants. The garden looks more like a waste tip than a garden at the moment lol...
'The power of accurate observation .... is commonly called cynicism by those that have not got it.
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Fair point about soil inviting rot. I certainly don't want to lose the tree-it's a bit unique to me.
I'll go and get a pic or two now.
Gardening in Central Norfolk on improved gritty moraine over chalk ... free-draining.
Please Ignore the uncut grass and the bed which has recently been turned over waiting for warmer weather to plant out the bedding plants. The garden looks more like a waste tip than a garden at the moment lol...
'The power of accurate observation .... is commonly called cynicism by those that have not got it.
George Bernard Shaw'