Plant ID, please
This plant is growing up my Slash Pine.
Leaves are between 12" and 18" long. It gets killed back by frost, but comes right back. I've never seen a flower.
I know from the old Google Maps street-view pic of our house that it used to cover the entire trunk of the tree, but now there's just the one "stem".
If you ignore the leaves, the structure is growing like a Philodendron.