Dryopteridaceae erythrosora, commonly known as the Autumn Fern, is a type of deciduous or semi-evergreen fern in the Dryopteridaceae family. It is native to East Asia, including Japan, China, and Korea.

Plant Type:

• Category: Fern

• Growth Habit: Clumping, upright, and spreading

• Foliage: Coppery-red new fronds that mature into deep green

• Hardiness Zones: USDA 5–9 (tolerates mild frost)

Ideal Growing Conditions:

• Light: Prefers partial to full shade

• Humidity: Prefers moderate to high humidity

• Soil: Moist, well-draining, and rich in organic matter

• Watering: Keep soil consistently moist but avoid waterlogging

Uses:

• Popular for shade gardens, woodland gardens, and indoor fern collections

• Adds year-round texture to landscapes

• Suitable for container gardening

Autumn Fern (Dryopteris erythrosora) Care Guide

The Autumn Fern (Dryopteris erythrosora) is a beautiful, hardy fern known for its coppery-red new growth that matures into deep green fronds. It is a low-maintenance, shade-loving plant that thrives in gardens and indoor pots, making it a great choice for both beginners and experienced plant lovers.

1. Light Requirements

✅ Best: Partial to full shade

✅ Tolerates: Dappled sunlight

🚫 Avoid: Direct afternoon sun (can scorch leaves)

Tip: If growing indoors, place it near a north- or east-facing window for indirect light.

2. Watering

✅ Keep the soil consistently moist but not soggy

✅ Water when the top 2–3 cm (1 inch) of soil feels dry

🚫 Avoid overwatering, as it can lead to root rot

Tip: Water at the base to keep fronds dry and prevent fungal issues.

3. Humidity & Temperature

✅ Prefers moderate to high humidity (40–60%)

✅ Ideal temperature: 15–25°C (59–77°F)

🚫 Avoid dry air, cold drafts, or sudden temperature changes

Tip: If indoors, use a humidity tray or occasional misting to keep fronds from drying out.

4. Soil & Potting

✅ Use well-draining, rich organic soil

✅ Best mix: 50% peat or compost + 50% sand or perlite

🚫 Avoid heavy, clay-like soil that retains too much moisture

Tip: Adding mulch around the base helps retain moisture and regulate temperature.

5. Fertilizing

✅ Apply a balanced liquid fertilizer (half-strength) every 4–6 weeks during spring and summer

🚫 Avoid over-fertilizing—excess nutrients can harm the plant

Tip: Use an organic compost or slow-release fertilizer in garden beds for steady growth.

6. Pruning & Maintenance

✅ Remove old, yellow, or damaged fronds to encourage new growth

✅ Trim back in late winter or early spring before new growth appears

Tip: If the fern looks tired, cut back old fronds to allow fresh ones to emerge.

7. Repotting

✅ Repot every 2–3 years or when roots outgrow the container

✅ Best time to repot: Early spring

Tip: If the plant looks crowded, divide it into smaller sections and replant.

8. Propagation

✅ Best method: Division

• Divide the root ball during repotting

• Replant sections in fresh soil, keeping roots moist

🚫 Does not propagate from leaf cuttings or spores easily indoors.