Species library β€Ί Adiantum β€Ί Adiantum macrophyllum
Ferns Partly documented

Adiantum macrophyllum

Largeleaf maidenhair

A widespread neotropical maidenhair with simply pinnate fronds of large, broad pinnae. Its new fronds often flush pink to red. It ranges from Mexico and the Caribbean to Bolivia and northern Argentina, from near sea level to about 2,400 m. It is one of the more forgiving tropical maidenhairs to grow: give it warmth, humidity and bright shade.

Adiantum macrophyllum
Photo: Daderot, Public domain, via Wikimedia Commons
At home, aim for
Day Warm-growingTargets in Plantistry
Night Close to the dayTargets in Plantistry
Humidity Humid airBand in Plantistry
Light ShadeDLI and PPFD in Plantistry
No rest periodGrows in the ground

Where it grows wild

It grows in forest understorey and on shaded banks. The Colombian catalogue lists it across the Andes, the Guiana region, the Caribbean plain and the Pacific lowlands, describes it as herbaceous, and records local uses of its vascular strands for necklace cord.

Recorded at 5–2,425 m, median 659 m (432 records); the Colombian catalogue gives 0–1,600 m.

Mexico and Central AmericaCuba, Hispaniola, Jamaica, Puerto Rico and the Lesser AntillesNorthern South America and the GuianasEcuador, Peru and BoliviaBrazil and north-eastern ArgentinaGalΓ‘pagos

πŸ”’ Growing it like that

The wild conditions above, turned into targets for a shelf, a tent or a greenhouse. The full profile has:

βœ“ Day and night temperature targets, and the limits it tolerates
βœ“ Humidity band, and how to hold it
βœ“ Light as DLI and PPFD for a grow light
βœ“ Wet and dry seasons, and whether to rest it
βœ“ Substrate and airflow
βœ“ A step-by-step setup to grow it like the wild

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Profiles are drafts built from measured range and climate and from published sources; each section carries its own confidence in the app. Photo from Wikimedia Commons, used under its Public domain licence, unmodified.