Mature size & growth rate

How big does Kangaroo Paw Fern (Microsorum diversifolium) get?

Also called Kangaroo paw fern, Kangaroo fern, Kangaroo foot fern.

More about kangaroo paw fern

About Kangaroo Paw Fern

Microsorum diversifolium · also called Kangaroo paw fern, Kangaroo fern · houseplant

The kangaroo paw fern is an easygoing Australasian epiphytic fern with glossy, leathery, lobed fronds spreading from a creeping surface rhizome. It thrives in bright-to-medium indirect light, evenly moist soil and average-to-high humidity, tolerating ordinary rooms better than fussier ferns. Microsorum is not individually listed by ASPCA, so treat as mildly toxic and verify with a vet.

Mature size: Indoors typically around 30 cm (1 ft) tall and spreading wider over time, often 60 cm to 1 m (2-4 ft) across in a large container as the rhizome creeps.

Indoor size vs how big it gets in the wild

Kangaroo Paw Fern does not get tall — it gets long. Size here is about stem length and how you train or cut it, not how much floor it claims. Indoors and in a pot, expect typically around 30 cm (1 ft) tall and spreading wider over time, often 60 cm to 1 m (2-4 ft) across in a large container as the rhizome creeps.. A pot, your light levels and a little pruning are what set the final size in a home, far more than the plant's theoretical potential.

Growth shows up as lengthening stems that trail down or climb up a support; the plant can be kept tiny or grown metres long from the exact same root system.

Growth rate and years to mature

Kangaroo Paw Fern is a slow grower. Realistically, expect many years — it gains very little each season, so it can hold the same shelf-sized footprint for 5-10+ years. Its feeding profile backs this up: feed with a balanced liquid houseplant fertiliser diluted to half strength every 4-6 weeks during spring and summer; pause in autumn and winter. ferns are light feeders, so avoid over-fertilising, and skip feeding for about six months after repotting into fresh mix.

Want this turned into the right next pot at the right moment? The pot size calculator and the kangaroo paw fern repotting guide cover when and how much to size up — pot size is one of the biggest levers on how fast kangaroo paw fern grows.

How to keep kangaroo paw fern smaller

You are not stuck with the maximum size. For kangaroo paw fern specifically, these are the levers, in order of impact:

Trim the longest vines back to the length you want — kangaroo paw fern takes hard cutting well and bushes out from the cut.
Cut just above a leaf node; each trimmed stem usually branches into two, so pruning makes it fuller, not sparser.
The cuttings root easily in water or mix, so "keeping it smaller" doubles as free new plants.
A trim once or twice a season is usually enough to hold its length.

The keep-it-smaller method, step by step

Decide the length you want. Pick the point each vine of kangaroo paw fern should stop — you can be aggressive; it regrows readily.
Cut just above a node. Snip about 0.5 cm above a leaf node so the stem branches there instead of dying back.
Root the cuttings. Drop the trimmed pieces in water or mix — they root in 2-4 weeks and can fill the same pot for a bushier look.
Repeat as it runs. Re-trim whenever it overshoots; regular light pruning keeps it both smaller and fuller.

How to grow kangaroo paw fern bigger or faster

If you want it to fill the space sooner, push the conditions rather than hoping — for kangaroo paw fern the accelerators are:

Good light plus a moss pole or trellis triggers the longest, fastest, largest-leaved growth.
Give it something to climb — many vines grow far faster and bigger up a support than trailing.
Feed through spring and summer and keep it consistently watered while it is actively running.

Light is almost always the ceiling. The kangaroo paw fern light requirements page covers exactly how bright a spot it needs to grow at its potential instead of stalling.

When kangaroo paw fern outgrows the room (or the pot)

"Too big" usually arrives as one of these signs for kangaroo paw fern:

Vines pooling on the floor or wrapping past where you want them — purely a trimming cue, not a repot one.
Bare, leggy stems with leaves only at the tips (usually a light problem, not a size one).
A tangled mass that has outrun its support and needs cutting back and re-training.

If it is the pot rather than the room, it is a repotting job, not a goodbye — see the kangaroo paw fern repotting guide. If you want more of this plant instead of a bigger one, the kangaroo paw fern propagation guide turns prunings into new plants.

Kangaroo Paw Fern size — frequently asked questions

How big does kangaroo paw fern get?

Kangaroo Paw Fern reaches typically around 30 cm (1 ft) tall and spreading wider over time, often 60 cm to 1 m (2-4 ft) across in a large container as the rhizome creeps. when grown indoors. Growth shows up as lengthening stems that trail down or climb up a support; the plant can be kept tiny or grown metres long from the exact same root system.

Is kangaroo paw fern slow or fast growing?

Kangaroo Paw Fern is a slow grower. Expect many years — it gains very little each season, so it can hold the same shelf-sized footprint for 5-10+ years. Kangaroo Paw Fern does not get tall — it gets long. Size here is about stem length and how you train or cut it, not how much floor it claims.

How long does kangaroo paw fern take to reach full size?

Roughly many years — it gains very little each season, so it can hold the same shelf-sized footprint for 5-10+ years. Light, pot size and feeding move that timeline more than anything else.

How do I keep kangaroo paw fern smaller?

Trim the longest vines back to the length you want — kangaroo paw fern takes hard cutting well and bushes out from the cut. Cut just above a leaf node; each trimmed stem usually branches into two, so pruning makes it fuller, not sparser. The cuttings root easily in water or mix, so "keeping it smaller" doubles as free new plants. A trim once or twice a season is usually enough to hold its length.

How can I make kangaroo paw fern grow bigger or faster?

Good light plus a moss pole or trellis triggers the longest, fastest, largest-leaved growth. Give it something to climb — many vines grow far faster and bigger up a support than trailing. Feed through spring and summer and keep it consistently watered while it is actively running.