Q.Indian Banyan Tree
I have a potted tree that I just transferred outdoors. I planted it very close to a hardwood in hopes it will cannibalize that tree and grow. In reading your article, I am afraid I misunderstood how the tree works. Can you tell me do I have any hopes of this potted plant moving outdoors successfully? I live in East Texas, usually noted as Zone 8. I am watching for frost and intend to protect the tree if frost or the rare snow comes.
You will need to continue to grow your Banyan Tree as an indoor plant in your growing zone.
It will not survive the cold growing conditions in zone 8, even if covered.
https://www.gardeningknowhow.com/ornamental/trees/banyan/growing-a-banyan-tree.htm