Vanilla planifolia will eventually take up a -lot- of room. It is a
vining plant that can reach ten meters or so with the right enivroment
and care.

You shouldn't think about getting vanilla from it. The process
involves fermenting the beans in tropical heat for quite some time.

If you really want a piece of V. planifolia, it is being offered on
E-Bay by several sources. As with all things E-Bay, "caveat emptor."
J. Del Col