Platycerium
Platycerium grande
giant staghorn fern
- Latin
- Platycerium grande
- Chinese
- 巨獸鹿角蕨
- Japanese
- グランデ
- English
- giant staghorn fern
Platycerium grande, the giant staghorn fern, is a Mindanao endemic from the Philippines with tall, deeply and symmetrically lobed shield fronds and pendent fertile fronds up to two metres long. Each fertile frond bears two spore patches at the second fork, the one reliable difference from P. superbum. It never pups and is grown only from spores.
Care notes
Native habitat
Most current references treat Platycerium grande as endemic to Mindanao in the southern Philippines, with records from Zamboanga, Lanao and Davao and newer ones from central Mindanao. Older literature stretched the range across mainland Southeast Asia; that reflects early confusion with other large species. It is a rainforest epiphyte, occasionally on rock, in a climate that is warm and humid all year with no cool season. That is why this giant staghorn fern handles heat far better than P. superbum.
Light
Bright, filtered light for four to eight hours a day. It tolerates warmth better than superbum but scorches just as easily under midday sun, and a burnt shield frond carries the scar for years.
Water and humidity
Soak when the mount has dried, roughly every three to six days in summer and much less in winter. Keep humidity at 60–80% with a fan running. The nest traps litter and water; without airflow it rots from the centre outward.
Medium and mounting
Temperature and seasons (temperate, indoor)
Ideal 18–32 °C, which makes it an indoor plant year-round in temperate climates. Hold it above about 12 °C in winter and away from cold glass; most references rate it less cold-tolerant than superbum, though one Japanese source says the opposite, so err on the warm side. Reduce water in winter, keep the light, and offset central heating with a humidifier and a fan.
Common problems
- Thin, papery shields that tear easily: a trait of the species, not thirst.
- Black rot at the crown: standing water plus stagnant air.
- Years without fertile fronds: normal until the shield reaches size.
- Labelled grande but only one spore patch: it is superbum.
Collector notes
Grande vs superbum. P. grande bears two spore patches per fertile frond, one on each side at the second fork, and the frond divides into four main lobes that usually hang. P. superbum bears one patch in the first fork with two main lobes. On the shields, grande stays felted with stellate hairs, lobes deeply and symmetrically, and is thinner in texture; superbum loses its white hair with age, lobes more shallowly and feels thicker. Juveniles cannot be told apart; wait for fertile fronds.
Provenance. The species is assessed as critically endangered in the wild and protected under Philippine law. As far as we can determine, Platycerium is not listed on the CITES appendices, but export of wild-collected plants remains restricted domestically. Buy spore-grown plants only.
FAQ
How do I tell Platycerium grande from P. superbum?
Count the spore patches. Grande has two per fertile frond, one on each side at the second fork, with four hanging lobes. Superbum has one in the first fork and two main lobes. Grande's shields stay felted and lobe deeply and symmetrically; superbum's lose their white hair and lobe shallowly. Juveniles cannot be separated.
Is Platycerium grande CITES-listed?
As far as we can determine, no *Platycerium* species appears on the CITES appendices, so international shipping needs a phytosanitary certificate rather than a CITES permit. Grande is, however, assessed as critically endangered and protected under Philippine law, and wild-collected export is restricted. Buy spore-grown plants and the question goes away.
Does Platycerium grande produce pups?
No. Grande grows as a single crown and cannot be divided; every plant is spore-grown or tissue-cultured. Its spores germinate poorly in nature, which is part of why wild populations are in trouble and why raising a sporeling to size takes real skill. Ask how the plant was propagated.
How do I tell grande from wandae and holttumii?
All three look alike as juveniles. *P. wandae* has a fringe of small toothed lobes around the growing point of its shield; grande and holttumii do not. *P. holttumii* has shorter, thicker, more upright fertile fronds, while grande's are long, pendent and carry two spore patches each. These are rules of thumb; young plants are still easy to misjudge.
Is Platycerium grande easy to grow?
Easier than superbum in warm homes. It comes from a climate that is warm and humid all year, so it grows continuously between about 18 and 32 °C and does not stall in summer heat. Its weak points are cold, below roughly 12 °C, and water standing in the nest. A good first large species.