# sensitive fern (*Onoclea sensibilis*)

The sensitive fern is a soft, green plant that loves to grow in shady, wet places. Its leaves can feel a bit fuzzy, and they often curl up when they get dry, which is why it's called 'sensitive'!

- **Category:** [Plants](https://www.snappit.app/explore/categories/plant)
- **Rarity:** Common
- **Danger:** 1/5 · Very low
- **Snaps:** 142
- **Habitat:** Wetlands

![sensitive fern](https://commons.wikimedia.org/w/index.php?title=Special:Redirect/file/Onoclea_sensibilis_KS-01.jpg&width=800)

Photo: Kurt Stüber \[1\], CC BY-SA 3.0 · [Wikimedia Commons](https://commons.wikimedia.org/wiki/File:Onoclea_sensibilis_KS-01.jpg)

## Appearance

The sensitive fern has broad, light green fronds that are deeply lobed, almost appearing divided into leaflets. Its sterile fronds are distinctively triangular or oblong, contrasting with its darker, bead-like fertile fronds.

## Taxonomy

- **Kingdom:** Plantae
- **Phylum:** Tracheophyta
- **Class:** Polypodiopsida
- **Order:** Polypodiales
- **Family:** Onocleaceae
- **Genus:** Onoclea

## Interesting facts

- Its name comes from how quickly its fronds die with the first frost!
- Its unique fertile fronds look like strings of tiny green or brown beads!
- This ancient plant has grown on Earth for millions of years, since dinosaur times!
- Unlike flowering plants, ferns reproduce using microscopic, dust-like spores!

## Special abilities

- **Freeze-Fighter:** The sensitive fern can rapidly wilt and die back with the first frost, protecting its roots from harsh winter damage.
- **Spore Sniper:** It has unique bead-like fertile fronds that hold spores all winter, ensuring new ferns can grow in spring.
- **Water Watcher:** Sensitive ferns grow only in very moist soil, acting like a natural signal for damp, healthy ground.

## Measurements & details

- **Height:** 30-90 cm
- **Spread:** 30-60 cm
- **Edible:** No
- **Toxicity:** None
- **Lifecycle:** Perennial

## Ecological connections

- **Eaten by:** [White-tailed deer](https://www.snappit.app/explore/white-tailed-deer) (*Odocoileus virginianus*) — Deer sometimes browse its fronds.
- **Depends on:** [Sensitive Fern Borer Moth](https://www.snappit.app/explore/sensitive-fern-borer-moth) (*Papaipema pterisii*) — Larvae bore into its stems.
- **Shelter:** [Wood frog](https://www.snappit.app/explore/wood-frog) (*Rana sylvatica*) — Frogs hide among its dense growth.

## Traits

- [Furry](https://www.snappit.app/explore/traits/furry): Furry describes animals possessing a dense covering of soft hair or fur.
- [Deciduous](https://www.snappit.app/explore/traits/deciduous): Deciduous plants periodically shed all their leaves, typically during autumn or dry seasons.
- [Shade Tolerant](https://www.snappit.app/explore/traits/shade-tolerant): Shade tolerant plants are adapted to grow and thrive in areas with low light levels, requiring less direct sunlight.
- [Rapid Growing](https://www.snappit.app/explore/traits/rapid-growing): Rapid growing plants exhibit accelerated growth rates, quickly increasing in size and biomass within a short period.
- [Decomposer](https://www.snappit.app/explore/traits/decomposer): Describes organisms that break down dead organic material, recycling nutrients back into the ecosystem.
- [Wetland](https://www.snappit.app/explore/traits/wetland): This habitat trait identifies species found in wetlands, which are areas of land saturated with water, either permanently or seasonally, including marshes, swamps, and bogs.

## Collections

- [Plants](https://www.snappit.app/explore/collections/plants)

## Safety

**Danger:** 1/5 · Very low

Always look but don't touch wild plants unless a grown-up says it's okay.

## Frequently Asked Questions

### How to identify sensitive fern?

Compare frond shape, how the leaflets are arranged, the stalk, and any spore clusters you can see. A single detached leaflet often hides the plant's overall growth pattern. Fern Identifier: upload a photo and compare the visible details.

### How tall is sensitive fern?

30-90 cm

### How wide does sensitive fern spread?

30-60 cm

### Is sensitive fern edible?

No

### Is sensitive fern toxic?

None

### What is sensitive fern's lifecycle?

Perennial

### Where is sensitive fern usually found?

Wetlands

## Where to spot

- [Abbott Farm Historic District](https://www.snappit.app/guides/places/abbott-farm-historic-district) — New Jersey, US · Historic District
- [Alabama City Wall Street Historic District](https://www.snappit.app/guides/places/alabama-city-wall-street-historic-district) — Alabama, US · Historic District
- [Albany Pine Bush](https://www.snappit.app/guides/places/albany-pine-bush) — New York, US · Nature Reserve
- [Anderson University](https://www.snappit.app/guides/places/anderson-university) — South Carolina, US · Campus
- [Arden Park–East Boston Historic District](https://www.snappit.app/guides/places/arden-park-east-boston-historic-district) — Michigan, US · Historic District
- [Awbury Arboretum](https://www.snappit.app/guides/places/awbury-arboretum) — Pennsylvania, US · Botanical Garden

[View all places to see sensitive fern](https://www.snappit.app/guides/where-to-see/sensitive-fern)

## More Plants

- [white snakeroot](https://www.snappit.app/explore/white-snakeroot) (*Ageratina altissima*)
- [tree-of-heaven](https://www.snappit.app/explore/tree-of-heaven) (*Ailanthus altissima*)
- [western sword fern](https://www.snappit.app/explore/western-sword-fern) (*Polystichum munitum*)
- [common milkweed](https://www.snappit.app/explore/common-milkweed) (*Asclepias syriaca*)

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Source: [Sensitive Fern: Facts & Places to See — Snappit](https://www.snappit.app/explore/sensitive-fern)