Native Habitat:

Moist forests, shaded slopes, and riparian areas.

Bloom Time:

Spores released in summer; no true flowers.

Growth Habit & Mature Size:

Perennial fern, 4–10 feet tall, with large, arching fronds that form dense, upright clumps. Fronds are pinnately compound with toothed leaflets and distinctive chain-like sori along the undersides.

Light & Soil Requirements:

Partial to full shade; thrives in moist, humus-rich, well-drained soils. Prefers consistently damp, shaded conditions and tolerates occasional seasonal wetness.

Willamette Valley Native Companion Plants:

Polystichum munitum, Tolmiea menziesii, Athyrium filix-femina, Adiantum pedatum, Tiarella trifoliata.

Urban Garden Function:

Adds dramatic vertical foliage, layered texture, and lush greenery to shaded urban gardens, woodland-inspired landscapes, and naturalized plantings. Works well as a specimen fern, understory groundcover, or in moist garden beds.

Wildlife Supported:

Provides shelter for insects, amphibians, and small ground-dwelling wildlife. Fronds create microhabitats and maintain moist understory conditions.

Historical Use:

Used historically by Indigenous peoples for medicinal and practical purposes (e.g., bedding and basketry). Valued ornamentally for large, graceful fronds and ecological contribution to woodland and riparian gardens.