The Story
Plant Bio
Dryopteris erythrosora, or Autumn Fern, is a semi-evergreen fern with arching fronds. New growth emerges a striking coppery-red or pink color before maturing to a glossy deep green.
Its most distinctive feature is the colorful new growth in spring, which provides multi-season interest unmatched by many other ferns. It is also valued for its adaptability and deer resistance.
Uses & Benefits:
Essentials
At a Glance
Plant Type
Grass
Height
24 inches
Width
24 inches
Light
Partial Sun, Shade
Zones
6, 7, 8, 9
Water
Moderate
Humidity
Average
Lifespan
Perennial
Native To
East Asia
Toxicity
Non-toxic to humans and pets
Bloom period
Early summer – Late summer
In flower about 3 months of the year
Planting
How to Grow
- Tuck seeds into well-draining soil in early spring.
- Mist cuttings regularly to maintain humidity and promote rooting.
- Water consistently to keep soil moist but not waterlogged.
- Fertilize monthly with a balanced fertilizer during growing season.
- Prune dead or damaged foliage to encourage healthy growth.
- Divide clumps every 2-3 years in early spring for rejuvenation.
Pro Tip
Use a warm, sunny location to ensure vigorous growth and vibrant foliage.
Keep It Thriving
Care Guide
Do
- Water regularly to keep soil moist 🌱
- Provide full sun for optimal growth
- Apply balanced fertilizer monthly
Don't
- Avoid overwatering to prevent root rot ❌
- Do not allow soil to dry out completely
- Avoid heavy shade which can reduce foliage vibrancy
Seasonal Care Calendar
| Task | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Divide | ||||||||||||
| Fertilize | ||||||||||||
| Mulch | ||||||||||||
| Plant | ||||||||||||
| Spring Cleanup |
Watch Out For
Pests & Diseases
Common Pests
Common Diseases
In the Garden
Landscape Uses & Companions
Landscape Uses
Multiply
Propagation Methods
Good to Know
Common Questions
Autumn Fern questions
What zones can Autumn Fern grow in?
Autumn Fern is hardy in USDA Zones 6–9. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.
Is Autumn Fern deer resistant?
Yes — Autumn Fern is rated deer-resistant. Deer typically pass it over, though extreme hunger can override any plant's defenses.
When does Autumn Fern bloom?
Autumn Fern typically blooms in early summer through late summer. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.
Does Autumn Fern need full sun?
Autumn Fern does best in part shade.
Keep exploring
Explore the genus
Hardy in your zone?
Grow Autumn Fern with confidence
See it in a design of your actual yard, get zone-matched care reminders, and track it season by season in your garden journal.