PURPOSE: To provide a method for curing a tree embedded in the ground in which the feed of water and air is readily carried out in fixing and curing roadside trees or trees in a park, etc., and tree trunks can strongly be supported in the ground and an apparatus therefor.

CONSTITUTION: A space (s) surrounded by a transverse directing bottom frame 2 and standing frames 3 is formed in a pit 1 formed in the ground and a root ball 5 of a tree 4 is housed in the space (s) to arrange upper transverse bar materials 3' of the standing frames 3 just above the top surface of the root ball 5. In this state, the pit 1 is filled back.