Species · genus Adiantum · Pteridaceae

Aleutian Maidenhair

Adiantum aleuticum (Rupr.) C.A.Paris

Also known as: Aleutian Maidenhair Fern · Five-finger Fern · Northern Maidenhair · Western Maidenhair · Western Maidenhair Fern

Growth habit

perennial or lithophyte

Native range

Alaska, Alberta, Aleutian Is., Arizona, British Columbia, California, Colorado, Idaho, Maine, Mexico Northeast, Mexico Northwest, Michigan, Montana, Nevada, Newfoundland, Oregon, Pennsylvania, Québec, Utah, Vermont, Washington, West Virginia, Wyoming

Reference · A. aleuticum

Cultivars of A. aleuticum

The named forms growers keep — each with its own page, each honest about how much we know.

No named cultivars catalogued under A. aleuticum yet. When growers document a stable, named form, it earns its own page here.

Guide

The species-level account. Cultivar pages build on this and say where they differ.

Adiantum aleuticum is the western maidenhair fern, a perennial that grows on cool, shaded slopes and damp rock faces across western North America and beyond. It wants even, consistent moisture and bright but indirect, filtered light, never direct sun, which scorches its delicate fronds. Keep the mix lightly moist and water when the top half-inch begins to feel dry, taking care that the roots never sit waterlogged.

Care recipe

The species record — the baseline every cultivar inherits unless it says otherwise.

Care notes are early — not yet verified

Light: ai:claude-opus-4-8
Water: ai:claude-opus-4-8 (range 3-7d)
Humidity: ai:claude-opus-4-8
Soil: ai:claude-fable-5
Care: ai:claude-fable-5

Light

Medium light

Water

≈ every 7 days

Humidity

High

Temperature

10–24 °C

Soil mix

Humus-rich, moisture-retentive well-draining mix

Propagation

Division of the rhizome, or spores

Fertilizing

Weak balanced feed monthly while growing

Growth rate

Moderate

Flowering

Ferns don't flower — reproduce by spores

ToxicityAuthoritative · species

Not yet documented

This is where toxicity lives — every cultivar of this species inherits it and none can override it.

Reference images

Every image credited. Licenses link to their deeds.

No reference gallery yet

A few clear photos — habit, a mature leaf, a flower if it blooms — would give this page its eyes.

Add images

Sources: ai:claude-opus-4-8 · ai:claude-opus-4-8 (range 3-7d) · ai:claude-fable-5

Kept true by its growers

Every fact here carries its source. Grow Aleutian Maidenhair yourself? What you’ve observed — how it drinks, how it holds its color, a name that’s off — is exactly what keeps this page honest. Contributions are reviewed before anything changes.