In message , Stan The Man
writes
Hm, this plant is certainly 6m tall and must presumably therefore be
fully grown - but the stems are nothing like scaffold diameter. They
are quite willowy and even at the base wouldn't be as much as one-third
the diameter of a scaffold pole. Maybe it needs pruning to fatten it up?

Or maybe its been forced to get it to grow tall artificially quickly.
In which case it's longevity I'd've thought would be suspect. ?

--
dave @ stejonda