Troubleshooting
Japanese Tassel Fern problems — and how to fix them
Japanese Tassel Fern (Polystichum polyblepharum) is generally low-drama, but a few issues come up again and again. Here is what each one looks like, why it happens, and the fix.
Crown rot from winter wet
The crown is susceptible to rotting in waterlogged or poorly draining soil over winter; improve drainage before planting and mulch around — not directly over — the crown with bark chips.
Taphrina wettsteiniana fungal infection
This fern can be susceptible to Taphrina wettsteiniana, which causes distorted, galled growths on fronds; remove and destroy affected fronds promptly and avoid overhead watering to reduce humidity around foliage.
Prevent japanese tassel fern problems before they start
Most japanese tassel fern issues are care-mismatch, not bad luck. Dial in the basics:
Japanese Tassel Fern problems — FAQ
Why is my japanese tassel fern crown rot from winter wet?
The crown is susceptible to rotting in waterlogged or poorly draining soil over winter; improve drainage before planting and mulch around — not directly over — the crown with bark chips.
Why is my japanese tassel fern taphrina wettsteiniana fungal infection?
This fern can be susceptible to Taphrina wettsteiniana, which causes distorted, galled growths on fronds; remove and destroy affected fronds promptly and avoid overhead watering to reduce humidity around foliage.