Mature size & growth rate

How big does Resurrection Fern (Polypodium polypodioides) get?

Also called Little Grey Polypody, Miracle Fern, Gray Polypody.

More about resurrection fern

About Resurrection Fern

Polypodium polypodioides · also called Little Grey Polypody, Miracle Fern · houseplant

Polypodium polypodioides is a remarkable epiphytic fern native to the Americas that can lose up to 97% of its water and fully recover when rehydrated — hence the common name Resurrection Fern. It is excellent for naturalistic displays on driftwood or cork. True ferns are generally pet-safe.

Mature size: 5-15 cm tall, spreading as rhizomes extend

Indoor size vs how big it gets in the wild

Resurrection 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 5-15 cm tall, spreading as rhizomes extend. 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

Resurrection Fern is a moderate grower. Realistically, expect three to six years to reach mature indoor size, gaining a steady amount each growing season. Its feeding profile backs this up: feed monthly during spring and summer with a very dilute balanced liquid fertiliser (quarter strength). for mounted plants, use a foliar spray fertiliser. this species has minimal nutritional needs.

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

How to keep resurrection fern smaller

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

Trim the longest vines back to the length you want — resurrection 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 resurrection 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 resurrection fern bigger or faster

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

More (indirect) light dramatically lengthens the vines and enlarges the leaves.
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 resurrection fern light requirements page covers exactly how bright a spot it needs to grow at its potential instead of stalling.

When resurrection fern outgrows the room (or the pot)

"Too big" usually arrives as one of these signs for resurrection 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 resurrection fern repotting guide. If you want more of this plant instead of a bigger one, the resurrection fern propagation guide turns prunings into new plants.

Resurrection Fern size — frequently asked questions

How big does resurrection fern get?

Resurrection Fern reaches 5-15 cm tall, spreading as rhizomes extend 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 resurrection fern slow or fast growing?

Resurrection Fern is a moderate grower. Expect three to six years to reach mature indoor size, gaining a steady amount each growing season. Resurrection 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 resurrection fern take to reach full size?

Roughly three to six years to reach mature indoor size, gaining a steady amount each growing season. Light, pot size and feeding move that timeline more than anything else.

How do I keep resurrection fern smaller?

Trim the longest vines back to the length you want — resurrection 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 resurrection fern grow bigger or faster?

More (indirect) light dramatically lengthens the vines and enlarges the leaves. 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.