Microsorum diversifolium · Kangaroo paw fern

The plant shows the characteristic growth habit of kangaroo paw fern: a thick, creeping rhizome covered in fuzzy reddish-brown scales sitting on top of the soil, with wiry dark stipes (petioles) arching out in a fan before the leaf blades begin. The fronds themselves are deeply pinnatifid/almost pinnate, divided into narrow, finger-like lobes with wavy margins - much more deeply cut than the broader, shallow-lobed fronds of Phymatosorus grossus, and completely different from the simple, undivided strap-shaped fronds of Microsorum punctatum (both of which have already been ruled out). This deep, narrow lobing combined with the exposed hairy rhizome is most consistent with Microsorum diversifolium (syn. Phymatosorus diversifolius), commonly sold as kangaroo paw fern. A possible alternative to rule out would be Microsorum scolopendria, which has somewhat similar lobing but typically broader, fewer segments and a less hairy rhizome; a closer photo of the rhizome scales and sori (fertile dot) arrangement on the underside of a frond would help confirm the exact species.

Generated 2026-10-06 17:53 by anthropic (claude-sonnet-5).

Light

Medium to bright indirect light; avoid direct sun which can scorch the fronds. Tolerates lower light but growth slows.

Water

Keep soil or mount lightly and evenly moist; water when the surface just starts to dry out, and never let it fully dry or stay soggy.

Nutrients

Dilute (half-strength) balanced liquid fertilizer monthly during spring through fall; skip in winter -- ferns are sensitive to fertilizer salt buildup.

Repotting

Repot every 1-2 years in spring when rootbound; this fern has a shallow, often creeping rhizome so use a wide shallow pot rather than a deep one.

Soil media

Loose, well-draining, chunky mix -- e.g. standard potting soil amended with orchid bark, perlite, and peat/coir -- since these are epiphytic/semi-epiphytic ferns in habitat.

Temp & humidity

65-80F; high humidity (50-70%+) -- mist regularly, use a pebble tray, or place in a humid conservatory zone away from drafts and heat vents.

Temperature range

🌡️ 65-80F

Humidity range

💦 50-70%+

Care group

🏷️ Low Light & Humid

Toxicity

No known toxicity concerns to pets or people.

Pests & diseases

Generally trouble-free; watch for scale and mealybugs, and root/rhizome rot if kept too wet or in poorly draining media.

Propagation

Divide the creeping rhizome into sections with fronds and roots attached, then pot separately in moist fern mix.

Generated 2026-08-16 21:28 by anthropic (claude-sonnet-5).