How to care for Boston Fern
Nephrolepis exaltata · Nephrolepidaceae
The archetypal porch fern, a Victorian favorite with long arching fronds that form a lush green fountain. It is one of the more forgiving ferns indoors, but it never negotiates on two points: steady moisture and humid air. Give it both and it will shed gracefully instead of catastrophically. Water roughly every 4 days while it's growing (about every 7 in winter), give it bright, indirect light, kept above 54°F (12°C) — it wants humid air.
Care at a glance
Keep the soil consistently moist but never waterlogged — check the pot every few days, as the dense root ball dries fast.
Bright, filtered light — near an east window or back from a brighter one; direct sun scorches the fronds.
Quarter- to half-strength balanced liquid feed monthly in spring and summer; ferns burn easily.
Mistakes that kill this plant
- Letting the root ball dry out completely — the collapse is dramatic and slow to reverse.
- Hanging it over a heat vent in bone-dry winter air.
- Full sun placement that bleaches and crisps the fronds.
Seasonal tips
- In winter, move it away from radiators and add humidity — this is when most Boston ferns fall apart.
- Shower the plant occasionally to rehydrate and clean the fronds.
- Some leaflet shedding indoors is normal; groom old fronds at the base in spring.
Is it safe for pets?
Our records list Boston Fern as non-toxic to cats and dogs.
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Toxicity here is informational, not a safety guarantee. Those are our own records, compiled by following the ASPCA's published toxic and non-toxic plant lists and Pet Poison Helpline's plant poison list rather than copied from them — confirm anything that matters against the ASPCA's published lists, which this one is matched to, or with your vet. If your pet ingested this plant, contact your vet or the ASPCA Animal Poison Control Center at (888) 426-4435.