Watering schedule

How often to water Resurrection Fern (Polypodium polypodioides) — the schedule

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

More about resurrection fern

Watering at a glance

Base rhythm	Allow to dry slightly between waterings; roughly every 7-10 days, or mist daily when mounted
Spring / summer	Spring and summer: soak or dunk the roots/mount thoroughly about once a week, then let them dry almost completely before the next soak.
Autumn	Autumn: lengthen the gap between soaks as light and growth taper off.
Winter	Winter: soak far less often — roughly every 2-3 weeks — and always let the roots dry fully in between.
Light	Medium indirect light (a couple of metres from a window)

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.

Ideal humidity: 50-75%

Watch for — Frond curling and browning: Normal desiccation response — the plant is not dead. Simply water or mist thoroughly and fronds will unfurl within hours.

The watering schedule, season by season

Resurrection Fern grows on bark, not in soil — it wants its roots soaked then fully dried and exposed to air, never kept damp like a potted plant. The base rhythm for resurrection fern is allow to dry slightly between waterings; roughly every 7-10 days, or mist daily when mounted, but the real interval moves with the season, the light and the pot — so treat the figures below as a starting point and always confirm with the plant itself.

Spring & summer (active growth): Spring and summer: soak or dunk the roots/mount thoroughly about once a week, then let them dry almost completely before the next soak.
Autumn (slowing down): Autumn: lengthen the gap between soaks as light and growth taper off.
Winter (rest / dormancy): Winter: soak far less often — roughly every 2-3 weeks — and always let the roots dry fully in between.

This epiphytic fern is adapted to boom-and-bust moisture cycles. When planted in a substrate, keep lightly moist; when mounted on bark or driftwood, mist daily and soak the mount weekly. It will curl and go dormant-looking when dry but revives with water.

Want this turned into a live reminder that adjusts to your home and the weather? The Growli watering calculator takes your pot size, light and season and returns a starting interval for resurrection fern in seconds.

How to tell resurrection fern needs water

A calendar is the worst way to water resurrection fern. Check the plant and the soil instead — for this species, look for these signals in order:

Roots turn silvery-grey or chalky instead of green/plump.
The mount or bark medium is bone dry and light.
Leaves or pseudobulbs look slightly wrinkled or less rigid.

The most reliable single check is the first one on that list. When two signals agree, water; when they disagree, wait a day and look again — under-watering resurrection fern for a day is almost always safer than over-watering it.

Overwatering vs underwatering resurrection fern

The two failure modes can look alike at a glance, so check the soil weight and wetness before you decide. For resurrection fern specifically:

Signs you are overwatering

Mushy, brown, hollow roots that have stayed wet too long.
Yellowing, soft leaves at the base.
A persistently wet, never-drying medium.

Signs you are underwatering

Leaves go limp, leathery or accordion-pleated; roots stay grey for long stretches.
Shrivelling pseudobulbs or curling leaves.

Treating resurrection fern like a normal houseplant — watering little and often into bark or moss that never dries — suffocates and rots the roots. Soak hard, then let it dry out.

Water quality notes

Rainwater or filtered water is best for resurrection fern; many epiphytes are sensitive to softened water and tap-water minerals.

Seasonal and environmental adjusters

Every figure above shifts with the conditions in your home. For resurrection fern, the levers that matter most are:

Air movement matters as much as water — roots must dry between soaks to avoid rot.
A bark or mounted medium dries far faster than moss, so the wetter the medium, the longer you wait.
In high humidity you can soak less often; in dry heated rooms, more often but still let it dry.

Pot choice is part of this too — work out the right size with the pot size calculator, since a pot that is too big stays wet long enough to rot the roots of resurrection fern.

Resurrection Fern watering — frequently asked questions

How often should I water resurrection fern?

Water resurrection fern allow to dry slightly between waterings; roughly every 7-10 days, or mist daily when mounted. Spring and summer: soak or dunk the roots/mount thoroughly about once a week, then let them dry almost completely before the next soak. Winter: soak far less often — roughly every 2-3 weeks — and always let the roots dry fully in between.

How do I know when resurrection fern needs water?

Roots turn silvery-grey or chalky instead of green/plump. The mount or bark medium is bone dry and light. Leaves or pseudobulbs look slightly wrinkled or less rigid. The single most reliable test for resurrection fern is the first signal on that list — checking the soil or the plant directly always beats watering by the calendar.

What does an overwatered resurrection fern look like?

Mushy, brown, hollow roots that have stayed wet too long. Yellowing, soft leaves at the base. A persistently wet, never-drying medium. Treating resurrection fern like a normal houseplant — watering little and often into bark or moss that never dries — suffocates and rots the roots. Soak hard, then let it dry out.

What are the signs of an underwatered resurrection fern?

Leaves go limp, leathery or accordion-pleated; roots stay grey for long stretches. Shrivelling pseudobulbs or curling leaves.

Can I use tap water on resurrection fern?