Watering schedule

How often to water Squirrel's Foot Fern (Davallia trichomanoides) — the schedule

Also called Ball fern, Squirrel foot fern.

More about squirrel's foot fern

Watering at a glance

Base rhythm	When the top 2-3 cm of soil is dry, roughly every 5-7 days
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	Bright indirect light (just back from a sunny window)

About Squirrel's Foot Fern

Davallia trichomanoides · also called Ball fern, Squirrel foot fern · houseplant

Squirrel's foot fern is an epiphytic fern famed for the furry, silvery-brown creeping rhizomes that crawl over the pot like little animal feet. Its finely divided, lacy triangular fronds are deciduous to semi-evergreen. Native to tropical Asia, it makes an elegant hanging or kokedama plant and is one of the ASPCA-confirmed pet-safe ferns.

Ideal humidity: 50-70%

Watch for — Shrivelled, dried-out rhizomes: The furry rhizomes desiccate in dry air or if the mix stays too dry. Raise humidity and keep the surface lightly moist; mist the rhizomes occasionally.

The watering schedule, season by season

Squirrel's Foot 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 squirrel's foot fern is when the top 2-3 cm of soil is dry, roughly every 5-7 days, 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.

Keep lightly and evenly moist during growth, letting the surface just dry between waterings. The exposed rhizomes resent constant wet; water the mix, not the rhizome. Reduce watering if it drops fronds in cooler months.

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 squirrel's foot fern in seconds.

How to tell squirrel's foot fern needs water

A calendar is the worst way to water squirrel's foot 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 squirrel's foot fern for a day is almost always safer than over-watering it.

Overwatering vs underwatering squirrel's foot fern

The two failure modes can look alike at a glance, so check the soil weight and wetness before you decide. For squirrel's foot 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 squirrel's foot 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 squirrel's foot 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 squirrel's foot 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 squirrel's foot fern.

Squirrel's Foot Fern watering — frequently asked questions

How often should I water squirrel's foot fern?

Water squirrel's foot fern when the top 2-3 cm of soil is dry, roughly every 5-7 days. 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 squirrel's foot 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 squirrel's foot 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 squirrel's foot 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 squirrel's foot 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 squirrel's foot 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 squirrel's foot fern?