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No . My guess is that it just got into the hedge by means of wind blown seeds . Having said that though I have seen quite big sycamores successfully pleached and laid , so if that’s all you got then that’s what you have to make do with .
My father grew up on a farm in Devon between the wars and would talk about the winter job of "hedging and ditching". The soil in the ditch would be cut and lifted with a lazy jack (long handled shovel) and placed (slapped!) onto the side or shoulder of the bank. His lazy jack, made by the local blacksmith, now hangs in my shed ready to dig my runner bean trench. Along with a couple of his billhooks and a staff hook.