Thelypteris decursive-pinnata ‘Japanese Beech Fern’

Thelypteris decursive-pinnata ‘Japanese Beech Fern’is a graceful fern native to East Asia with finely cut upright fronds that form dense colonies in moist woodland settings. It offers a soft natural texture and spreads gently through rhizomes.

Height & Spread: 18 – 24 in x 18 – 30 in

Bloom Time: Non flowering

Light Requirements: Part shade to full shade

Soil Preference: Moist, humus rich, well drained soil

Watering Needs: Moderate to high; appreciates even moisture

Deer Resistance: Moderately deer resistant

Native Status

This species is native to Japan and eastern Asia. Though not North American native, it naturalizes well in similar woodland conditions.

WILDLIFE & INSECTS

Beneficial Insects

• Supports habitat and ground cover for beneficial insects including beetles and moisture loving pollinators.

Spacing & Landscape Use

Spacing Recommendations:

• Space 18 – 30 in apart to accommodate rhizomatous spread while maintaining dense ground cover.

Landscape Placement:

• Excellent for woodland understories, rain gardens, and shady borders. Creates soft feathery masses in naturalistic plantings.

Companion Plants

• Polygonatum odoratum (Solomons Seal) – Contributes elegant arching form above the fern layer.
• Asarum canadense (Wild Ginger) – Spreads low with bold leaves beneath taller ferns.
• Tiarella cordifolia (Foamflower) – Adds flowering interest and clumping form under trees or near paths.
• Epimedium x rubrum – Offers delicate foliage and spring blooms that complement fern textures.
• Trillium grandiflorum – Brings early season white flowers to woodland edges shared with ferns.