Staghorn Fern
Platycerium bifurcatum · also called elkhorn fern, antelope ears, common staghorn
Staghorn Fern is a striking epiphytic fern with antler-shaped fronds, usually mounted on a board. Give it bright indirect light and soak it weekly.
Platycerium bifurcatum is an epiphytic fern that grows on tree trunks in the wild, never in soil, and is famous for its forked, antler-like fronds. It produces two distinct kinds of leaves: flat, rounded shield fronds that clasp the mounting surface and protect the roots, and the showy green antler fronds that arch outward and do the photosynthesizing. The shield fronds naturally brown and harden over time, which is normal and should never be removed.
Because it is an air plant at heart, the staghorn fern is most often grown mounted on a wooden board or in a hanging basket rather than a pot, where its roots can breathe and drain freely. This unusual growth habit makes it a dramatic living wall piece. It is genuinely manageable once you understand its epiphytic needs, asking mainly for bright indirect light, weekly soaking, and good air circulation. It is also non-toxic to cats and dogs.
How to care for Staghorn Fern
Light
Give bright, indirect light, similar to the dappled light beneath a forest canopy. An east or north window, or a few feet from a brighter exposure, works well. Avoid harsh direct sun, which scorches the antler fronds.
Watering
Water by soaking the root ball or mount in room-temperature water for 10 to 20 minutes, then let it drain fully. Do this about once a week in warm months and every other week in winter. Let it dry slightly between soakings to prevent rot.
Humidity
Enjoys moderate to high humidity of 50 to 70 percent, which keeps the fronds supple. Mist between soakings in dry homes or grow it in a humid room. Good airflow alongside humidity is key to avoiding fungal problems.
Temperature
Keep it between 60 and 80F. It tolerates brief dips but should stay above 50F and away from frost and cold drafts. Stable warmth suits it best year-round.
Soil & potting mix
It grows without soil, mounted on wood with a backing of sphagnum moss, or in a basket of loose, chunky bark and moss. The medium should hold some moisture yet drain and dry quickly. Never pot it in dense, water-retentive soil.
Feeding
Feed monthly in spring and summer with a balanced liquid fertilizer diluted to half strength, applied to the moss during a soak. Some growers tuck a banana peel behind the shield fronds as a slow-release feed. Skip feeding in winter.
Pruning & grooming
Remove only the green antler fronds if they brown completely; never remove the brown shield fronds, as they are part of the plant's natural structure and protect the roots. Trim dead tissue with clean scissors. Otherwise pruning is minimal.
Repotting
Remount or move to a larger board or basket every few years as the plant outgrows its base. Wrap the root ball in fresh sphagnum moss and secure it with fishing line or wire. Spring is the best time.
Propagation
Mature plants produce offsets called pups at their base. Separate a pup with a portion of root and shield frond, then mount it on its own moss-backed board. Keep it humid until established. Spore propagation is slow and advanced.
Common Staghorn Fern problems
- Browning shield fronds. The flat shield fronds turning brown and papery is completely normal and part of the plant's life cycle. Leave them in place, as removing them harms the plant and exposes the roots.
- Black spots on antler fronds. Dark, mushy spots indicate overwatering or poor airflow leading to rot. Water less often, let the mount dry between soakings, and improve air circulation around the plant.
- Wilting, drooping antlers. Limp antler fronds signal the plant is too dry. Increase soaking frequency and humidity; the fronds should firm back up as the plant rehydrates.
Staghorn Fern FAQ
How do I water a mounted staghorn fern?
Soak the entire mount or root ball in a sink or bucket of room-temperature water for 10 to 20 minutes, then hang it back up and let it drain completely. Do this about weekly in warm months and less often in winter. The moss should dry out slightly between soakings to prevent rot.
Should I cut off the brown fronds on my staghorn fern?
Leave the brown, flat shield fronds alone, because they are a natural and essential part of the plant that protects the roots and anchors it to the mount. Only remove the antler-shaped fronds if they brown and die completely. Cutting the shield fronds will damage the plant.
Do staghorn ferns need to be mounted?
They grow best mounted on a board or in a hanging basket because they are epiphytes that need their roots to breathe and drain. While young plants can start in a pot of chunky bark and moss, mounting mimics their natural tree-dwelling habit and prevents the rot that solid potting soil can cause.