Does it need full sun?

No, it prefers partial to full shade.

Can it grow in standing water?

Yes, it thrives in wet, boggy soil.

Plant guide

Sensitive fern.

Onoclea sensibilis

Pronounced oh-no-KLEE-uh sen-si-BIL-is

Also known as Sensitive Fern, Sensitive Fern, Bead Fern, bead fern, meadow brake, polypod brake

The sensitive fern is a lovely, prehistoric looking plant that thrives in damp, shady spots. It gets its name because its fronds are quite delicate and will quickly wilt at the first sign of frost. It is a fantastic choice if you have a boggy area in your garden that needs some greenery.

At a glance

Care level: Easy
Plant type: Perennial fern
Light: Partial shade to full shade
Indoor light: Medium light
Water: Every 2 to 4 days
Mature size: 1 to 3 feet
Growth rate: Fast
Hardiness: USDA 3 to 9
Bloom time: Does not bloom

Care

Keep the soil consistently moist, as this fern hates drying out. Watch for brown, crispy leaf edges which signal the plant is too dry or getting too much sun. It is a vigorous grower, so give it plenty of room to spread.

Watering: Always keep the soil damp to the touch.
Feeding: Apply a balanced liquid fertilizer during the active growing season.
Pruning: Trim back dead or damaged fronds in late winter or early spring.
Repotting: Repot when the rhizomes become too crowded in their container.
Soil: Rich, moist, acidic soil
Soil pH: 5.0 to 7.0
Temperature: -35 to 30°C
Humidity: 60 to 90%

Safety

People: All parts of this plant are toxic if ingested.
Pets: This plant is considered non toxic to cats and dogs.
Children: Keep children away from this plant as ingestion can cause stomach upset.
Contact allergens: The foliage may cause mild skin irritation in sensitive individuals.
Airborne allergens: Spore production can cause respiratory distress for those with severe allergies.
Edibility: This plant is considered toxic and should not be consumed.

How to identify it

Deeply lobed, light green sterile fronds
Distinctive bead like fertile fronds
Fronds emerge in a triangular shape
Spreads via underground creeping rhizomes

Height: 0.3 to 0.9m
Spread: 0.3 to 1.2m
Leaves: bright green, deciduous
Flowers: 0cm

Problems to watch for

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Growing it

Propagation: division, spores
When to plant: spring, autumn

Pair this fern with other moisture loving plants to create a lush, boggy woodland aesthetic.

Grows well with

Marsh Marigold · They both thrive in the same wet, shady conditions.
Cardinal Flower · This companion adds vibrant color to the damp areas where ferns grow.

Similar species

Ostrich Fern · It shares a similar preference for moist, shady habitats.

Science

Family: Onocleaceae
Genus: Onoclea
Order: Polypodiales
Class: Polypodiopsida
Native range: Eastern North America and parts of East Asia.
Conservation: This plant is secure throughout most of its range.

It grows in wet meadows and swampy woods where it can maintain constant soil moisture.

Value to wildlife: provides cover for amphibians, nesting material for birds
Uses: rain gardens, bog gardens, woodland borders, erosion control

Through the year

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Flowering

Fruiting

Foliage

Ecological indicators

Salinity: 1/9
Soil reaction: 5/9
Light: 3/9
Temperature: 5/9
Moisture: 8/9
Nutrients: 5/9

Taxonomy resolved against GBIF.

Questions people ask

Does it need full sun?: No, it prefers partial to full shade.
Can it grow in standing water?: Yes, it thrives in wet, boggy soil.

Where the name comes from

The genus name Onoclea comes from the Greek word for a vessel, referring to the bead like fertile fronds.

Good to know

It is a prehistoric plant that has remained largely unchanged for millions of years.
The fertile fronds persist through winter and look like small brown beads.
It spreads via underground rhizomes to form large colonies.

Also in

Plants for shade

Keep your sensitive fern growing

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This guide was generated with AI on September 26, 2026 and checked against GBIF taxonomy. It is general information, not horticultural or veterinary advice. Read about how we build these guides.