Troubleshooting
Hart's Tongue Fern problems — and how to fix them
Hart's Tongue Fern (Asplenium scolopendrium) 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.
Browning frond tips
From low humidity, mineral-heavy water or the soil drying out. Use rainwater, raise humidity and keep the mix evenly moist.
Leaf scorch
Direct sun bleaches and burns the broad fronds. Move to shade or bright indirect light.
Crown or rhizome rot
Cold, waterlogged soil rots the crown. Improve drainage and ease back on water in winter.
Vine weevil (outdoors/containers)
Larvae chew roots, causing sudden wilting. Inspect the rootball and treat the compost with biological nematodes if grubs are found.
Prevent hart's tongue fern problems before they start
Most hart's tongue fern issues are care-mismatch, not bad luck. Dial in the basics:
Looking for hart's tongue fern in general rather than its problems? Read the full hart's tongue fern care guide — light, water, soil and feeding.
Hart's Tongue Fern problems — FAQ
Why is my hart's tongue fern browning frond tips?
From low humidity, mineral-heavy water or the soil drying out. Use rainwater, raise humidity and keep the mix evenly moist.
Why is my hart's tongue fern leaf scorch?
Direct sun bleaches and burns the broad fronds. Move to shade or bright indirect light.
Why is my hart's tongue fern crown or rhizome rot?
Cold, waterlogged soil rots the crown. Improve drainage and ease back on water in winter.
Why is my hart's tongue fern vine weevil (outdoors/containers)?
Larvae chew roots, causing sudden wilting. Inspect the rootball and treat the compost with biological nematodes if grubs are found.