Confirm the reason
Compaction, poor drainage or a root-filled pot can justify repotting. Age alone does not. Never repot merely because spring arrived.
Nenrin · Care system
Repotting bonsai
The right moment depends on species, root condition and development—not a recurring calendar date. Prepare the aftercare before touching the roots.
01 / Method
Repotting is root surgery.
A weakened tree usually needs stable light, correct moisture and time—not simultaneous pruning, feeding and repotting.
Match timing to biology
Temperate deciduous trees are often repotted as buds swell; tropical species recover best during stable warmth and active growth.
Secure and recover
Anchor the tree firmly, eliminate large air pockets and water thoroughly. Shelter from harsh wind while maintaining appropriate light.
02 / Triage
Safe sequence
Check the species and season.
Read moisture below the surface.
Stabilise light, temperature and wind.
Change one variable, then observe.
Nenrin