The two parts may not unite and the plant will die due to:
- Incompatibility of the root stock and scion/bud.
- Lack of sufficient cambial contact due to in-proper cuts or/and unfit joint.
- Desiccation of the graft union.
- Water or infection is entering the joint.
- The plants dry out due to lack of watering or too dry atmosphere.
- Bad timing of the grafting, i.e. in-proper stage of development of the scion/bud.
- The scion/bud has dried out before grafting.
- The root stock is in a bad condition.
- The plant tissue was damaged by too hot grafting wax.
- Damage or loss of the bud(s).
