Stabilise before treating
Do not repot, feed and prune at once. Keep conditions stable while you establish whether an immediate risk exists.
Nenrin · Care system
Bonsai diagnosis
Start with species, season, location and root-zone moisture. The same yellow leaf can mean natural ageing, drought, excess water or damaged roots.
01 / Method
A symptom is not a diagnosis.
A weakened tree usually needs stable light, correct moisture and time—not simultaneous pruning, feeding and repotting.
Reconstruct the sequence
Write down when the change began, what moved or changed, and whether old or young growth was affected first.
Escalate clear danger signs
A soft trunk base, foul roots, rapidly blackening shoots or extensive pest activity require experienced local assessment.
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