Sensitive Fern
Onoclea sensibilis
Last reviewed: June 2026
Sensitive Fern (Onoclea sensibilis) is a moisture-loving deciduous fern native to most of the eastern and central United States. This shade-tolerant species thrives in wet soils and wetland margins.
Light
part shade
Water
high
Size
12"–36" H × 12"–36" W
Bloom
N/A
Native to
AL, AR, CO, CT and 35 more states
Browse plants for this ecoregion
Sensitive fern is a moisture-loving native fern that forms colonies in shaded, wet areas. Its broad, triangular fronds create a lush groundcover that dies back completely in winter, leaving distinctive dark fertile fronds that persist through the cold months.
Growing Sensitive Fern
Grow Sensitive Fern in part shade and high water. Mature plants reach 12 to 36 inches tall and spread 12 to 36 inches wide. Expect low maintenance to keep it looking intentional in a front yard.
In an HOA neighborhood
Sensitive Fern takes more care to keep looking intentional in a front yard. Maintenance level: low. Consider it for backyard or mid-zone beds rather than the street edge.
Works well in: backyard only.
- Dies back completely in winter leaving bare ground
- Spreads aggressively and can look wild
- Requires consistently wet conditions that may appear unkempt
Wildlife value
This fern provides shelter and nesting material for small wildlife and insects. The dense colonies offer cover for amphibians and ground-dwelling creatures in moist woodland settings.
Common questions
- Where does Sensitive Fern naturally grow?
- Sensitive Fern is native to most of the eastern and central United States, from Maine to Florida and west to the Great Plains states including North Dakota, Wyoming, and Texas.
- What growing conditions does Sensitive Fern prefer?
- Sensitive Fern thrives in partial shade to full shade with consistently moist to wet soil conditions. It naturally occurs in swamps, wet meadows, and along stream banks.
- Why is it called Sensitive Fern?
- The common name refers to the plant's sensitivity to frost - the fronds are among the first to be damaged by early fall frosts, quickly turning brown and withering.
- Does Sensitive Fern produce flowers?
- No, like all ferns, Sensitive Fern reproduces by spores rather than flowers. It produces separate fertile fronds that bear spores in bead-like structures.
- Is Sensitive Fern toxic to cats?
- Yes. Sensitive Fern is listed as toxic to cats by the Cornell University Poisonous Plants Database (aspca.org). If your cat has been exposed, call the ASPCA Animal Poison Control Center at (888) 426-4435.
- Is Sensitive Fern HOA-friendly?
- Sensitive Fern takes more care to look intentional in a front yard. Consider it for backyard or mid-zone beds rather than the street edge.
Native range data from the USDA PLANTS Database and regional native plant society lists. Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.
Ready to grow Sensitive Fern? Add it to your garden in Pollinator Patch to track it and get season-by-season care guidance.
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