Dryopteris erythrosora

Dryopteris erythrosora

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Dryopteris erythrosora

Feature Description
Plant Name Dryopteris erythrosora
Common Name Autumn Fern, Japanese Shield Fern
Plant Type Semi-evergreen perennial fern
Height 18 to 24 inches (45 to 60 cm)
Spread 18 to 24 inches (45 to 60 cm)
Foliage Coppery-red young fronds maturing to glossy deep green
Growth Habit Clump-forming, arching fronds
Sun Exposure Partial shade to full shade
Soil Moist, well-drained, humus-rich soil
Watering Regular watering; keep soil consistently moist
Maintenance Low; trim back dead fronds in late winter or early spring
Uses Shade gardens, woodland gardens, borders, ground cover
Hardiness USDA Zones 5–9 (UK equivalent: RHS H5)

Planting Aspects

  1. Site Selection:
    Dryopteris erythrosora thrives in partial to full shade, making it ideal for shaded areas such as under trees or shrubs. It can tolerate some morning sun but prefers dappled or full shade.

  2. Soil Preparation:
    This fern prefers moist, well-drained soil enriched with organic matter. Avoid waterlogged areas to prevent root rot.

  3. Planting Depth:
    Plant at the same depth as it was in the nursery pot, ensuring the crown is level with the soil surface.

  4. Spacing:
    Space plants 18 to 24 inches (45 to 60 cm) apart to allow room for frond expansion and air circulation.

  5. Watering:
    Keep the soil consistently moist, especially during dry periods. Avoid allowing the soil to dry out completely.

  6. Mulching:
    Apply a layer of organic mulch (e.g., bark or compost) around the plant to retain moisture, regulate soil temperature, and suppress weeds.

  7. Maintenance:
    Minimal maintenance is required. Remove any dead or damaged fronds in late winter or early spring to tidy the plant and encourage fresh growth.

  8. Fertilizing:
    Apply a balanced, slow-release fertilizer in spring to promote healthy frond development.

Key Features & Uses

  • Seasonal Color:
    The young fronds emerge in stunning copper-red tones, transitioning to glossy green as they mature, providing seasonal interest.

  • Low-Maintenance Ground Cover:
    The clump-forming habit makes it an effective ground cover for shaded areas.

  • Shade Tolerance:
    Perfect for woodland gardens, shaded borders, or areas under trees.

  • Evergreen Appeal:
    In milder climates, it remains semi-evergreen, providing year-round structure and greenery.

  • Naturalized Gardens:
    Its elegant appearance blends well in informal, naturalized garden settings.

Dryopteris erythrosora is a beautiful, easy-to-grow fern that thrives in shaded, moist environments. Its copper-red young fronds offer a striking contrast to mature deep green foliage, making it a standout in shade gardens or woodland settings. With its low maintenance needs and year-round appeal, this versatile fern is an excellent choice for adding texture, colour, and structure to any garden.