Air-layering is done when leaves from the previous growth flush have matured. The thin cambium layer beneath the bark is scraped away. For best results, this ringed area should be left exposed for several weeks until callus tissue begins to form at the end toward the branch tip. If air-layering is done too soon after branches are ringed, rooting often fails. This is because freshly exposed cambium cells may continue to divide and overgrow the ringed area, thus inhibiting rooting.
Sphagnum moss is the preferred rooting medium.
The moss should be moist but not wet. The plastic wrap ends are tied tightly around the branch with string and sealed with tape to keep rainwater out. After two to four months, when several roots have formed and are visible through the plastic, the air- layered branch is cut off immediately below the plastic. The wrapping is then removed and the rooted air-layer planted in a suitable container. Removing about half of the leaves at the time of planting in the container will prevent excessive moisture loss.