Why does your Adiantum capillus veneris have yellow leaves? Diagnose the cause and fix it with our step-by-step guide.
Pet FriendlyMaidenhair ferns are highly sensitive to dry air; low humidity causes the delicate fronds to dehydrate and turn yellow before eventually browning. This is the most common issue in indoor environments with forced heating or cooling.
Adiantum species require consistently moist soil; allowing the root ball to dry out completely leads to rapid yellowing of the foliage. Unlike many other ferns, they have very little drought tolerance.
While they like moisture, sitting in stagnant water prevents oxygen from reaching the fine, delicate roots. This leads to fungal decay and a characteristic pale yellowing of the entire frond.
If the soil is depleted of nitrogen, the plant cannot produce sufficient chlorophyll, resulting in an overall yellowing of older fronds. This often occurs in ferns kept in the same potting mix for multiple years.
Your plant might also be experiencing one of these issues:
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