Microsorum musifolium

Crocodile Fern

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Taxonomy

Common Names

Crocodile FernCrocodyllus FernAlligator Fern'Crocodyllus'

Context

nativeRegion

Southeast Asia (including Malaysia, Indonesia, New Guinea, and adjacent islands).

usdaZones

10–12 (grown indoors in cooler climates).

companionPlants

Asplenium nidus, Platycerium bifurcatum, Nephrolepis exaltata

culturalUses

Occasionally used as an ornamental foliage plant indoors and in tropical fern gardens.

Care

LightBright, indirect light to part shade. Tolerates lower light but grows best with some filtered sunlight.

WateringKeep soil consistently moist but not soggy. Allow the top inch of soil to dry out between waterings. Reduce watering in winter.

SoilWell-draining, humus-rich soil. Prefers a loose, airy epiphytic mix if grown in containers.

FertilizerFeed monthly during the growing season with a diluted balanced liquid fertilizer.

HumidityHigh humidity preferred (60% or higher). Benefits from regular misting.

TemperatureThrives in 18–26°C (65–78°F). Protect from cold drafts and temperatures below 10°C (50°F).

HabitEpiphytic, occasionally terrestrial, evergreen fern with distinctive, leathery, crested fronds resembling a banana leaf.

Mature Size30–90 cm (1–3 ft) tall and wide.

Growth RateModerate growth rate under ideal conditions.

BloomingDoes not flower; reproduces by spores. Distinctive sori (spore clusters) on the underside of leaves.

DormancyNo true dormancy, but growth slows in cooler months.

MethodsDivision, Spores

DifficultyModerate (spores require patience and sterile conditions; division is easier).

Best SeasonSpring or early summer for division.

PruningRemove old or damaged fronds to encourage healthy new growth.

RepottingRepot every 2–3 years or when rootbound. Use an airy mix.

Pests & DiseasesGenerally pest-resistant but watch for fungus gnats, scale, mealybugs, and occasional leaf spot due to excessive moisture.

ToxicityNon-toxic to pets and humans.

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