How to care for Maidenhair Fern
Adiantum raddianum · Pteridaceae
The maidenhair fern carries delicate, fan-shaped leaflets on wiry black stems, giving it an airy, lace-like look few other houseplants match. It is famously unforgiving of dry air and dry soil, collapsing quickly if either slips. With consistent moisture and gentle light, though, it rewards you with clouds of soft green growth. Water roughly every 3 days while it's growing (about every 5 in winter), give it a bright room away from the window, kept above 59°F (15°C) — it wants humid air.
Care at a glance
Keep the soil evenly moist at all times — water as soon as the surface begins to dry, never letting the root ball dry out.
A north or east window with soft, filtered light is ideal; direct sun scorches the thin fronds within hours.
Balanced liquid fertilizer at quarter strength monthly — full-strength feeds burn the fine roots.
Mistakes that kill this plant
- Letting the root ball dry out completely, even once.
- Placing it near a heater or in direct sun.
- Assuming a crisped plant is dead and tossing it instead of cutting back and rehydrating.
Seasonal tips
- In winter, move it away from radiators and heat vents — dry heat is its number one killer.
- A pebble tray or humidifier nearby makes the difference between thriving and crisping.
- If it browns badly, cut all fronds to the base and keep the soil moist — it often regrows from the rhizome.
Is it safe for pets?
We couldn’t place Maidenhair Fern on a toxic or a non-toxic list, so its toxicity is unconfirmed — which is not the same as safe.
Full pet-safety details for cats & dogsCare for your Maidenhair Fern on autopilot
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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 those lists or with your vet. If your pet ingested this plant, contact your vet or the ASPCA Animal Poison Control Center at (888) 426-4435.