Quarantine and document
Separate the tree from the collection, photograph the symptom and inspect leaf undersides, branch forks, bark and the pot rim with magnification.
Nenrin · Care system
Bonsai pests
Webbing, sticky deposits, shells and moving insects point to different organisms. Isolate the tree and inspect carefully before choosing treatment.
01 / Method
Identify before spraying.
A weakened tree usually needs stable light, correct moisture and time—not simultaneous pruning, feeding and repotting.
Remove what is safe
A firm water jet or manual removal can reduce some pests. Protect the substrate and avoid spreading insects to neighbouring trees.
Match treatment to the organism
Follow the authorised product label for crop, pest, dose and interval. Protect beneficial organisms and never improvise household chemical mixtures.
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