Autumn Fern

dryopteris erythrosora

Also known as: ["Japanese Shield Fern","Red Shield Fern"]

Family: Dryopteridaceae Genus: Dryopteris Category: Leaf Plants

Overview

A deciduous or semi-evergreen fern with distinctive copper-red new fronds that mature to dark green.

Benefits & Perks

["shade tolerant","aesthetic foliage","wildlife attractant (bees, butterflies, birds)"]

Botanical Classification

Phylum: Tracheophyta
Class: Polypodiopsida
Order: Polypodiales
Family: Dryopteridaceae
Genus: Dryopteris
Botanical Name: Dryopteris erythrosora

Plant Characteristics

Basic Information
  • Category: Leaf Plants
  • Suitable Location: shaded garden bed or indoor pot with indirect light
  • Suitable For:
    Beginners Busy People (low Maintenance) Indoor Plant Lovers Outdoor Landscapers Wildlife Supporters
  • Is Weed: No
  • Allergenicity: low
Environmental Needs
  • Climate: {"temperatureRange":"5–30°C"}
  • Hardiness: {"zones":"5–9"}
  • Misting: every 2–3 days, especially in dry indoor environments
  • Drainage: Moderately well-draining.
  • Soil Type: Well-draining, rich, acidic to neutral soil with organic matter.
Maintenance Level
  • Maintenance Level: moderate
  • Toughness Level: moderate
  • Pruning Frequency: As needed; typically in late winter or early spring before new growth emerges.
  • Pruning Intensity: Light to moderate; remove only dead or yellowing fronds.
Care Details

Ideal Sunlight Coverage:
Bright indirect light; 4–6 hours of filtered sunlight per day; avoid direct sun.

Sunlight Tolerance Tips:
Acclimate slowly to new light conditions; protect from harsh afternoon sun; place in shaded outdoor areas.

Warning Signs: Yellowing or browning fronds, root rot, or stunted growth indicate poor soil or site conditions.

Care Requirements

Care Difficulty
easy

moderate

Sunlight

partial shade to dappled sunlight

Rotate plant for even growth; use sheer curtains to filter light; avoid south-facing windows.

Watering

every 7–10 days, allowing soil to dry slightly between waterings

Keep soil consistently moist but not waterlogged; avoid letting the soil dry out completely.

Soil

moist, well-draining, humus-rich soil

pH: 5.5–6.5 (slightly acidic to neutral).

Ensure good drainage; maintain moisture retention; avoid heavy clay soils.

Temperature

Prefers 60–75°F (15–24°C); cooler temperatures in winter promote dormancy.

Avoid sudden temperature changes; maintain stable conditions; protect from frost.

Fertilizing

monthly during growing season (spring to summer), none in winter

Apply fertilizer after watering; flush soil occasionally to prevent salt buildup; stop feeding in fall.

Propagation

Methods

Spores or division of rhizomes.

Step-by-Step Propagation Guide
  1. Collect spores.
  2. Prepare medium.
  3. Scatter spores.
  4. Keep moist.
  5. Or divide rhizomes.
  6. Replant divisions.

Best Time: Spring or early summer when the plant is actively growing.

Environment

High humidity (70–90%); warm temperatures (65–75°F); indirect light.

Medium

Sphagnum moss or sterile seed-starting mix.

Hormone

Not necessary for spores; rooting hormone can aid rhizome division.

Timeline

Spores may take 1–2 years to mature; rhizome division roots in 4–6 weeks.

Tools Needed

Spore collection kit, sterile knife, pots, humidity dome.

Quick Tips

Label new plants; maintain consistent moisture; be patient with spore propagation.

Pruning & Repotting

Pruning Guide
Method

Cut fronds at the base; avoid cutting into healthy growth.

Pruning Plan

Remove dead or damaged fronds to maintain appearance and health; encourage new growth.

Tools

Pruning shears, sterilized knife.

Checklist

Sterilize tools; remove dead fronds; clean debris; check for pests.

Repotting Guide
Best Season

Early spring before new growth starts.

Pot Size

One size larger pot; ensure it’s not too large to avoid waterlogging.

Method

Remove plant gently; trim roots if necessary; use fresh soil mix; ensure good drainage.

Suggestions

Repot every 2–3 years or when the plant becomes root-bound.

Checklist

Choose appropriate pot; prepare new soil; handle roots carefully; water after repotting.

Advanced Care Tips

Watering Mastery
Watering Checklist

Check soil moisture; water evenly; ensure drainage; adjust for season.

How to Apply Water Properly

Water thoroughly until it drains from the bottom, ensuring even moisture distribution without pooling.

Pro Tip: Use room temperature water to avoid shocking the roots.
Watering Schedule Tips

Water when the top inch of soil feels dry; reduce frequency in winter to prevent root rot.

Soil Improvement

Add peat moss, compost, or leaf mold to enhance structure and fertility.

Temperature Stress Management
Signs of Temperature Issues

Wilting, yellowing fronds, or stunted growth in extreme heat or cold.

Cold Stress

Slows growth and may cause fronds to brown or die back in temperatures below 50°F (10°C).

Solution: Move to a warmer location; protect from drafts; provide a layer of mulch for insulation.

Hot Stress

Fronds may scorch, turn brown, or curl in temperatures above 85°F (29°C).

Solution: Increase humidity; provide shade; water more frequently but avoid waterlogging.

Fertilizing Guide
Fertilizing Checklist

Use diluted fertilizer; apply during active growth; avoid winter feeding; flush soil periodically.

Fertilizing Method

Use a balanced liquid fertilizer diluted to half strength every 4–6 weeks during growing season (spring/summer); avoid winter feeding.

Common Problems & Solutions

Yellowing leaves in Dryopteris erythrosora may indicate nutrient deficiencies, overwatering, or pest infestations, affecting photosynthesis and overall plant health.

Wilting in Dryopteris erythrosora is often a sign of water stress, either due to drought or root issues, which can lead to reduced growth and potential plant death if not addressed.

Leaf spots on Dryopteris erythrosora are typically caused by fungal or bacterial pathogens, resulting in aesthetic damage and potentially weakening the plant if severe.

Rotting, particularly root or crown rot, can occur in Dryopteris erythrosora due to excessive moisture or fungal pathogens, leading to decay and eventual plant decline.

Toxicity Warning

Cats
Slightly Toxic

Cats may experience irritation and mild gastrointestinal distress if they ingest parts of Dryopteris erythrosora. The calcium oxalate crystals can cause discomfort but are not typically fatal.

⚠️ Symptoms:
vomiting diarrhea excessive drooling difficulty swallowing
🌿 Toxic Parts:
leaves roots
⚡ Toxic If:

if eaten

Prevent cats from chewing or ingesting the plant. Seek veterinary advice if ingestion is suspected.
Dogs
Slightly Toxic

In dogs, ingestion of Dryopteris erythrosora can cause irritation due to the presence of calcium oxalate crystals. While not life-threatening, the plant can lead to gastrointestinal upset and oral discomfort.

⚠️ Symptoms:
drooling pawing at mouth vomiting diarrhea lethargy
🌿 Toxic Parts:
leaves roots
⚡ Toxic If:

if eaten

Keep pets away from the plant. If ingestion occurs, consult a veterinarian.
Humans
Slightly Toxic

Dryopteris erythrosora contains insoluble calcium oxalate crystals, which can cause mechanical irritation to the mucous membranes and gastrointestinal tract upon ingestion. The plant is not highly toxic but can induce discomfort and mild symptoms.

⚠️ Symptoms:
mouth irritation difficulty swallowing nausea vomiting diarrhea
🌿 Toxic Parts:
leaves roots
⚡ Toxic If:

if eaten

Avoid ingestion. Wash hands after handling the plant to prevent accidental ingestion.
Important: Keep this plant out of reach of children and pets. If ingestion occurs, contact poison control or veterinary services immediately.

Frequently Asked Questions

Q: How much light does Dryopteris erythrosora need?

A: It thrives in partial to full shade, making it ideal for shaded garden areas.

Q: Is Dryopteris erythrosora toxic to pets?

A: No, it is non-toxic to dogs and cats.

Q: Why are the fronds of my Autumn Fern turning yellow?

A: Yellowing fronds may indicate overwatering, poor drainage, or insufficient light.

Quick Reference
Family: Dryopteridaceae
Care: easy
Light: partial shade to dappled sunli
Water: every 7–10 days, allowing so
Suitable For: ["beginners","busy people (low maintenance)","indoor plant lovers","outdoor landscapers","wildlife supporters (attracts bees, butterflies, birds)"]
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