1. At the position where air layering is needed, peel the bark n a ring shape 2 to 2.5 cm wide (make sure to cleanly peel it off).
2. Fill the plant rooting box with wet moss or sand.
3. Attach the filled plant rooting box to the peeled ring position on the branch.
4. Secure it with a tie (the rooting box has an automatic buckle, so this step can be skipped).
5. Depending on the tree species, it takes 3-6 months to grow. Once the roots are abundant, cut it off and transplant it elsewhere.