Orchids kept in trees

Some of my orchids have bloomed for years, others are just wishful remnants tucked into the crotch of a branch. All are in a strawberry guava tree that I planted not long after moving here near the Everglades. The guava has beautiful shiny, peeling bark, much loved by the orchids. They spread their gray-green roots down, through, and around it.  I am finding signs that the orchids will be blooming again soon.