I'm hoping someone can help. My Schefflera is 20 years old and healthy, lives indoors year round, doesn't get too much water and - during (Canadian) winter months - sits under grow lights 10 hours/day.
It's approximately 4 & 1/2 feet tall (not exactly 'Bonsai').
I have recently seen quite tall (8 - 10 foot) versions of this same plant (in shopping malls) with the roots wrapped around the trunk; almost, but not quite, Banyan style. I like the appearance of these, particularly as the roots seem to support the trunk (which is by no means sturdy, otherwise).
I have repotted my own tree several times and noted the roots as quite long with a tendency to grow in a circular direction along the perimeter of the pot (below the soil).
Can anyone tell me please how I might train the roots upward, out of the earth? Without killing my tree?
Thanks and regards,