Troubleshooting
Serissa Bonsai problems — and how to fix them
Serissa Bonsai (Serissa japonica) is generally forgiving once you match its basics, but a few issues come up again and again. Here is what each one looks like, why it happens, and the fix.
Leaf drop from any change
Notoriously quick to shed leaves after a move, draught, or change in light, water or temperature; keep conditions as stable as possible and it usually re-leafs once settled.
Root rot and dieback
Inconsistent or excessive watering rots the fine roots, causing branch dieback; use a free-draining mix and maintain even, moderate moisture without waterlogging.
Failure to flower
Sparse blooming results from too little light or over-pruning during the flowering season; give maximum bright light and prune lightly so as not to remove forming buds.
Aphids and spider mites
Soft new growth and dry indoor air attract aphids and mites (stippling, fine webbing); rinse foliage, raise humidity, and treat with insecticidal soap or horticultural oil.
Prevent serissa bonsai problems before they start
Most serissa bonsai issues are care-mismatch, not bad luck. Dial in the basics:
Looking for serissa bonsai in general rather than its problems? Read the full serissa bonsai care guide — light, water, soil and feeding.
Serissa Bonsai problems — FAQ
Why is my serissa bonsai leaf drop from any change?
Notoriously quick to shed leaves after a move, draught, or change in light, water or temperature; keep conditions as stable as possible and it usually re-leafs once settled.
Why is my serissa bonsai root rot and dieback?
Inconsistent or excessive watering rots the fine roots, causing branch dieback; use a free-draining mix and maintain even, moderate moisture without waterlogging.
Why is my serissa bonsai failure to flower?
Sparse blooming results from too little light or over-pruning during the flowering season; give maximum bright light and prune lightly so as not to remove forming buds.
Why is my serissa bonsai aphids and spider mites?
Soft new growth and dry indoor air attract aphids and mites (stippling, fine webbing); rinse foliage, raise humidity, and treat with insecticidal soap or horticultural oil.