How deep should my bedding be for a climber/twining plant?
I'm designing a trouble to integrate into my trellis; the plants I'm considering a
Bougainvillea
Clematis Montana
Hydrangea anomala ssp. petiolaris.
Loncera japponica
The plants won't be directly bedded into the ground; the trellis I've designed will have a trough at the bottom, but I can't find any info on how deep I should make this container.
Could someone advise please? Any links to sites I can use as a reference would be greatly appreciated.
Thanks,
Will
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