In air layering, a ring of bark is removed from the branch to be layered, from two cuts spaced from one-half to one inch apart, exposing the wood. The cambium layer, a slight green area immediately underneath the bark, should be completely removed to prevent new bark from forming again rather than roots. Wrap the cut surface with a ball of moist sphagnum moss about as big as a man's fist. This is held in place with a waxed string or rubber band and the entire ball wrapped with plastic film or aluminum foil. The plants will root quickly at the point the cut was made, and after the roots are established, the branch is removed from the parent just below the roots, and planted in a pot or in the garden where it is to grow.
Crotons develop their best leaf colors when planted in full sun.
Plants spaced in shade or semi-shade tend to develop a large amount of green color.