Troubleshooting
Broad Maidenhair Fern problems — and how to fix them
Broad Maidenhair Fern (Adiantum latifolium) 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.
Frond yellowing in low light
In dim indoor positions, fronds pale and new growth is weak. Move to a brighter spot with indirect light. This species is slightly larger than pot-grown cultivars and benefits from more light than compact forms.
Spider mites in dry air
Fine webbing on frond undersides indicates spider mite infestation, typically triggered by low humidity. Raise humidity, rinse fronds with water, and apply insecticidal soap or neem oil spray if infestation is heavy.
Crown rot
Overhead watering that collects at the crown, combined with cool temperatures, can cause rotting of the growing point. Water at the soil level only and ensure good airflow around the plant.
Prevent broad maidenhair fern problems before they start
Most broad maidenhair fern issues are care-mismatch, not bad luck. Dial in the basics:
Broad Maidenhair Fern problems — FAQ
Why is my broad maidenhair fern frond yellowing in low light?
In dim indoor positions, fronds pale and new growth is weak. Move to a brighter spot with indirect light. This species is slightly larger than pot-grown cultivars and benefits from more light than compact forms.
Why is my broad maidenhair fern spider mites in dry air?
Fine webbing on frond undersides indicates spider mite infestation, typically triggered by low humidity. Raise humidity, rinse fronds with water, and apply insecticidal soap or neem oil spray if infestation is heavy.
Why is my broad maidenhair fern crown rot?
Overhead watering that collects at the crown, combined with cool temperatures, can cause rotting of the growing point. Water at the soil level only and ensure good airflow around the plant.