Staghorn fern (Platycerium bifurcatum) care

Ferns · straightforward to keep

Last updated 26 October 2026

Staghorn fern (Platycerium bifurcatum) wants bright indirect light. Water it weekly. Soak the whole mount or root ball in water for ten minutes, then let it drain and dry out somewhat before the next soak — usually weekly. Pot it in none, ideally — mounted on bark with a pad of sphagnum moss. A weak balanced feed monthly in spring and summer, and repot every 2 years. Humidity: above 60%. A fern in dry air is a fern on its way out. The ASPCA lists it as non-toxic to cats and dogs.

The staghorn fern: two kinds of frond — flat round shield fronds that clasp the mount and brown as they age, and forked antler fronds that hang out from it. It is an epiphyte and is happiest mounted on a board with sphagnum rather than in a pot of compost.

Quick facts

Water: Water weekly. Soak the whole mount or root ball in water for ten minutes, then let it drain and dry out somewhat before the next soak — usually weekly.
Light: Bright indirect light.
Humidity: Above 60%. A fern in dry air is a fern on its way out.
Soil: None, ideally — mounted on bark with a pad of sphagnum moss.
Feeding: A weak balanced feed monthly in spring and summer.
Repotting: Repot every 2 years.
Toxic to pets: Non-toxic to cats and dogs. The ASPCA lists Common Staghorn Fern (Platycerium bifurcatum) as non-toxic to cats and dogs (checked 26 October 2026).
Difficulty: Straightforward.
Mature size: Fronds to 60–90 cm.
Native to: Java, New Guinea and eastern Australia.

Watering a Staghorn fern

Water weekly. Soak the whole mount or root ball in water for ten minutes, then let it drain and dry out somewhat before the next soak — usually weekly.

That cadence is the one PlantParlour sets for this species when you name it, and it is deliberately on the cautious side — a plant that asks a day early is safer than one that asks a day late. Log each watering and the reminder moves with the plant rather than with the calendar.

Light

Medium indirect light, and never direct sun. A bright north window or a well-lit bathroom is close to ideal.

Humidity and temperature

Above 60%. A fern in dry air is a fern on its way out. Central heating in winter is what turns a comfortable room into a dry one, and it is the usual reason an established plant suddenly browns at the edges or picks up spider mites.

Soil and potting

Staghorns are epiphytes that grow on tree trunks. Mounted on a board with sphagnum behind them is how they are happiest; in a pot, use pure bark and moss rather than compost.

Feeding

A weak balanced feed monthly in spring and summer. Stop feeding in autumn and start again when you see new growth in spring — feeding a plant that isn't growing just builds up salts in the pot.

Repotting

Repot every 2 years. Every spring. Divide the clump at the same time if it has filled the pot.

Common problems

The flat round shield frond turning brown
Normal. Shield fronds brown and stay on as the plant's anchor.

Fix: Leave it exactly where it is — removing it damages the plant.
Black spots spreading on the antler fronds
Too wet, or water sitting on the fronds in still air.

Fix: Water at the base, improve airflow, and let it dry between soaks.

Propagation

Separate the pups that form at the base of a mature plant, each with a piece of the shield frond.

A cutting taken in PlantParlour keeps its link to the plant it came from, so a propagation years later still traces back to the mother plant — which is the point if you ever sell or trade it.

Toxicity and safety

Non-toxic to cats and dogs.

The ASPCA lists Common Staghorn Fern (Platycerium bifurcatum) as non-toxic to cats and dogs (checked 26 October 2026).

If your pet has eaten a plant, call your vet, the ASPCA Animal Poison Control Center on (888) 426-4435, or the Pet Poison Helpline on (855) 764-7661. Both are open around the clock and may charge a consultation fee. Take the plant or its label with you.

This is general information, not veterinary advice. We don't test plants: what we say about toxicity follows the ASPCA's published plant list as it stood on 26 October 2026, and that list can change. "Non-toxic" means not poisonous — a pet that eats enough of any plant can still vomit, and fertiliser, pesticide or leaf shine on a plant can harm it. It also only helps if the plant is what you think it is. It covers cats and dogs only; ask your vet about rabbits, birds, reptiles or anything else, and a doctor about children. Read our terms.

Every houseplant in the library the ASPCA lists as non-toxic to cats and dogs

Questions people ask

How often should you water a Staghorn fern?

Water weekly as a starting point — that is the cadence PlantParlour sets for Platycerium bifurcatum. Soak the whole mount or root ball in water for ten minutes, then let it drain and dry out somewhat before the next soak — usually weekly. Light, pot size and the time of year all move that number, so treat it as a reminder to go and check rather than a rule.

How much light does a Staghorn fern need?

Medium indirect light, and never direct sun. A bright north window or a well-lit bathroom is close to ideal.

Is Staghorn fern toxic to cats and dogs?

Non-toxic to cats and dogs. The ASPCA lists Common Staghorn Fern (Platycerium bifurcatum) as non-toxic to cats and dogs (checked 26 October 2026). If a pet has eaten part of a plant, call your vet or the ASPCA Animal Poison Control Center on (888) 426-4435 straight away.

How do you propagate a Staghorn fern?