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Northern maidenhair fern

Northern maidenhair fern

Adiantum pedatum
A native fern with one of the most distinctive frond architectures in the plant kingdom: delicate emerald-green fronds borne on black wiry stems arranged in a horizontal pinwheel (palmate) pattern. Mature plants form layered tiers of pinwheels. Deciduous but utterly charming through the growing season. Excellent for damp shade - moist rich woodland soils are the ideal habitat.
Native: 35 US states + 4 CA provinces
Climate fit: broad (87/100)
Filler
Focal point
Light
Part shade
Water
Consistent moisture
Mature size
12-24" tall · 18" apart
Hardy in zones
3a-8b
brutally cold to frosty winters
AHS heat range
1-11
Plant range authored in AHS heat-zone terms.
Native in Illinois
Yes

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Native across 39 US states and Canadian provinces - a wide-ranging part of North America's plant communities.

Cold hardiness

These values are location-based: this location's current hardiness is the baseline, and the 2050 value is a projected future climate for this same location.
Now
Zone 6b
Plotwright
USDA Zone 6b
-5°F to 0°F
Well-suited
Zone 7a
Plotwright
0°F to 5°F
Well-suited
In plain terms: This location has cold winters. Its winters are projected to keep warming through 2050.
Well-suited today and still thriving in 2050.

Heat tolerance

Heat tolerance values are location-based too: heat days today are observed at this site, and the 2050 value projects this same location under a future climate.
Loading AHS heat-zone data for this location...

Similar plants

Browse lateral options with similar roles, light needs, size, or native-range overlap; these are not filtered for a better climate fit.
Snake's-head fritillary (Fritillaria meleagris) - solitary nodding bell-shaped flowers in deep reddish-purple, diagnostic chequered chessboard pattern on the tepals (the snake's-head), slender grey-green linear leaves on an upright stem.
Fritillaria meleagris
Snake's-head fritillary
An exquisite, delicate spring bulb grown for its solitary, nodding, bell-shaped flowers, which are uniquely chequered in a chessboard pattern of purple and dusky pink (or, on white forms, a faint ghost of the same lattice) and held on slender stems over fine grey-green leaves. The pendent, snake's-head bells give it both its common name and its quiet, wild charm. Native across much of Europe (POWO, Kew), it is a treasured but much-declined wildflower of old damp meadows, and its decline is a real conservation concern, which makes it a genuinely good plant for naturalizing in moist grass to help restore a lost habitat. Two things are load-bearing: unlike most spring bulbs it wants soil that stays moist, even damp, and does not dry out, so it fails in hot, dry spots; and it is toxic if eaten, since the bulb and all parts contain alkaloids. It is also a valuable early nectar source for the first bumblebees of the year. Hardy across USDA zones 3a-8b, it carries the RHS Award of Garden Merit and is rated fully hardy (H5).
Perennial
Full sun / Part shade
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Zones 3a-8b
Climate: moderate
Border
Filler
Focal point
Bloodroot (Sanguinaria canadensis) showing characteristic white multi-petaled flower wrapped in a rounded leaf.
Sanguinaria canadensis
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A native eastern North American spring ephemeral wildflower with pristine white 8-12-petaled flowers in early spring (often the first major forest-floor wildflower of the year) wrapped by a single rounded glaucous leaf. Disappears by midsummer to underground rhizomes. The red rhizome sap was historically used by Indigenous peoples as a dye and ceremonial paint.
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Pollinator
Filler
Canada anemone (Anemone canadensis) in flower, white cup-shaped blooms with five petal-like sepals and yellow centers held above deeply cut, sharply toothed palmate leaves.
Anemone canadensis
Canada anemone
Canada anemone (Anemone canadensis) is a vigorous, spreading native perennial of moist meadows, streambanks, and ditches across much of northern and central North America, grown for clean white cup-shaped flowers held over deeply cut, sharply toothed foliage in late spring and early summer. Be warned first: it spreads aggressively by underground rhizomes and can become a thug in a normal bed, running well beyond where you plant it and knitting into large colonies. That habit makes it an excellent plant for naturalizing a damp bank or filling a tough, contained spot, and a poor choice for a tidy mixed border where it will overrun quieter neighbors. Each flower carries five showy, petal-like white sepals around a boss of yellow stamens (the true petals are absent) on erect hairy stems to about 12 to 24 inches. It wants medium to wet soil in full sun to part shade and is hardy roughly from USDA zone 3 to 8.
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Full sun / Part shade
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Climate: broad
Pollinator
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Christmas fern (Polystichum acrostichoides) clump of leathery lance-shaped evergreen fronds arching from a central crown.
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Christmas fern
A native evergreen fern of eastern North America that holds leathery dark green fronds through winter and provides ground-level songbird cover - ideal for shaded woodland slopes and erosion-prone banks.
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Part shade / Part sun
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Common blue violet (Viola sororia) showing two five-petaled blue-violet flowers with white throats and dark nectar-guide veins above heart-shaped leaves.
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Common blue violet
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Dwarf crested iris (Iris cristata) showing low mat of foliage + light-blue flowers with yellow-white crests.
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Dwarf crested iris
A diminutive native woodland iris forming spreading mats of low sword-shaped foliage topped briefly in spring by delicate light-blue flowers with bold yellow + white "crests" running down each fall. One of the most charming native perennials for partly shaded sites. Among the smallest native irises (6-9" tall) - works beautifully as a groundcover under deciduous shrubs + along path edges. ALL parts toxic (typical iris caveat).
Perennial
Part shade
Moderate water
Zones 3a-8b
Climate: broad
Filler
Border

Educator packet

Plant packet
Northern maidenhair fern educator packet
A native fern with one of the most distinctive frond architectures in the plant kingdom: delicate emerald-green fronds borne on black wiry stems arranged in a horizontal pinwheel (palmate) pattern. Mature plants form layered tiers of pinwheels. Deciduous but utterly charming through the growing season. Excellent for damp shade - moist rich woodland soils are the ideal habitat.
Scientific name
Adiantum pedatum
Plant type
perennial
Hardiness
3a-8b
Light
part-shade
Moisture
consistent
Spacing
18 inches
Classroom prompts
- Which plant traits are observations, and which are care recommendations?
- How would this plant fit change if the garden location moved warmer, colder, wetter, or drier?
- Which source-backed facts would you cite in a lesson handout?
Use the Sources & citations section below for page citation styles and the field-level source list.

Sources & citations

Cite this page
For lesson plans, articles, or research that uses this page. Use the source cards below to explore the references that informed this record.
Plotwright. (2026, May 17). Northern maidenhair fern (Adiantum pedatum). Retrieved 2026, August 20, from https://plotwright.com/plants/adiantum-pedatum
Sources used for this record
This record is compiled from the sources below.
NC State Extension Gardener Plant Toolbox
University extension service
USDA PLANTS Database
Government data source
Lady Bird Johnson Wildflower Center Native Plant Database
Botanical research database
GBIF
Botanical research database
Wikimedia Commons
Photo · CC BY-SA 4.0