Staghorn Ferns (Platycerium spp.) are unlike almost any other indoor plant you'll grow. Usually mounted rather than potted, often grown without standard potting mix, and happy hanging on a wall, they're one of the most dramatic-looking plants you can have indoors — and surprisingly straightforward once you understand how they actually work.

In Australia, you'll also hear "elkhorn" used for some Platycerium species. The names get mixed around, but the care principles are similar: bright filtered light, good airflow, moisture without soggy roots.

How Staghorn Ferns grow

Staghorns are epiphytes — plants that grow on other plants or surfaces rather than in soil. In the wild they attach themselves to trees in tropical rainforests, drawing moisture and nutrients from the air, rain and organic debris that collects around their root base rather than from the ground.

In your home, this means they're mounted rather than potted. A piece of timber, a cork board or a moss-covered panel works well. The mounting gives the roots something to grip and allows air to circulate freely around them, which is essential. A mounted Staghorn can be taken down for watering and feeding, then rehung like a painting — which makes care surprisingly manageable once you get the rhythm of it.

Staghorn Ferns have two types of fronds. The shield fronds are the round, flat ones at the base. They'll often turn brown and papery over time, which makes them look dead — but they're not a problem. Don't remove them. They protect the root structure and help the plant anchor to its mount. The antler fronds are the forked, upright ones that give the plant its name — these are the ones you're growing for.

Don't polish or scrub the fronds. That pale fuzz on the surface is natural and helps the plant manage moisture. If the fronds are dusty, rinse gently rather than wiping hard.

Light

Bright indirect light is the target. Staghorns have evolved in the canopy of tropical rainforests — plenty of light, but filtered through other vegetation. A few hours of gentle morning sun is fine. Harsh afternoon direct sun will scorch the fronds.

In lower light the fronds will become longer and thinner as the plant reaches for more light — a clear sign it needs a better position. In Australia, a bright spot near a north or east-facing window works well for most of the year. 

Water

This is where Staghorn care differs most from a standard potted plant. The best method is soaking — take the mount down, submerge the root base and basal shield area in a bucket or bowl of lukewarm water until the bubbles stop, then let it drain fully before rehanging. The bubbles tell you air pockets are being displaced by water — when they stop, the root base is saturated.

If your Staghorn is too large for a bucket, take it outside and drench it thoroughly with a hose. Or better yet, leave it outside in the rain — that's about as close to natural conditions as you'll get. Just don't leave it sitting in a cold, exposed spot afterwards.

Watering frequency depends on your conditions — how warm the room is, how much light the plant gets, how quickly the mount dries out. In warmer months, once a week is a reasonable starting point. In winter, drop back to every two weeks or less. The test: press your finger into the moss or root base. If it still feels damp, leave it. If it's dry, it's time.

Don't let the root base sit in standing water — like most epiphytes, Staghorns need moisture but also need to dry between waterings. 

Humidity

Staghorns prefer humidity between 50–70% — closer to what they'd experience in a tropical rainforest. In dry Australian homes, especially in winter with heating running, this can be a challenge.

Grouping plants together helps. A humidifier nearby helps more. Good air circulation also matters — stagnant humid air creates conditions for fungal issues, while moving air keeps things balanced. Avoid positioning directly in front of air conditioning vents.

Fertiliser

Staghorns grow in nutrient-poor environments naturally, but that doesn't mean they don't benefit from feeding. A regular liquid fertiliser applied every two weeks during active growth will support healthy frond development — particularly the antler fronds which are putting on the most visible growth.

Apply diluted fertiliser directly to the root base when you water, or use a spray bottle to apply to the root area. Our Indoor Plant Food covers the full NPK range plus trace elements and works well for Staghorns through the growing season. 

Pull back in winter when growth slows. If it's still actively growing, feed monthly at half strength. If growth has properly paused, wait until it starts moving again.

Common problems

Brown shield fronds — normal. These are the base fronds doing their job. Leave them alone.

Browning antler frond tips — usually low humidity or underwatering. Check the root base moisture and increase humidity if needed.

Pale, elongated fronds — insufficient light. Move to a brighter position.

Black or mushy patches on the root base — overwatering or poor drainage. Let the mount dry out fully between waterings and ensure good airflow around the root base.

Scale or mealybug — check the undersides of fronds and around the root base. Remove physically with a damp cloth or cotton tip. Once the plant is clean, a light wipe with Neem Oil can help remove residue and keep suitable foliage looking fresh. 

Additional Reading

What Potting Mix Is Right For My Indoor Plants

Indoor Plants For Dark Rooms