Brad Carter of the UCI Arboretum in Irvine offers the following tips on growing orchids in trees:
* Select a species that can grow with roots exposed. He recommends species of Oncidium or Encyclia orchids.
* Remove the plant from its pot and gently shake the bark from the branch.
* Select a strong, vertical tree branch at least two inches in diameter. Position the plant so the new root growth is in the direction of the branch. Wrap nylon filament such as fishing line several times around roots and branch. Secure the plant by also wrapping one or more stems to the branch.