The Story
Plant Bio
Polystichum acrostichoides, commonly known as the Christmas fern, is a hardy fern native to eastern North America. It is characterized by its leathery, evergreen fronds and erect growth habit.
Its common name comes from its evergreen fronds, which were historically used in Christmas decorations. The fertile fronds are distinctive, with spore-bearing sori clustered on the narrowed terminal pinnae.
Uses & Benefits:
Essentials
At a Glance
Plant Type
Fern
Height
24 inches
Width
24 inches
Light
Partial Sun, Shade
Zones
4, 5, 6, 7, 8, 9
Water
Consistent moisture, avoid drought stress
Humidity
Prefers humid conditions
Lifespan
Decades
Native To
Eastern North America
Toxicity
Non-toxic to humans and pets
Bloom period
Early spring – Late spring
In flower about 3 months of the year
Marketplace
Where to Buy
Shipping costs Year-round shipping Free shipping
Planting
How to Grow
- Tuck spores or divisions into moist, well-drained soil in early spring.
- Mist fronds regularly to maintain humidity and encourage growth.
- Place in partial to full shade, avoiding direct afternoon sun.
- Water consistently to keep soil moist but not waterlogged, especially during dry periods.
- Apply a layer of mulch to retain soil moisture and suppress weeds.
- Fertilize with a balanced, slow-release organic fertilizer in spring.
Pro Tip
Ensure consistent moisture and shade for lush, healthy fronds.
Keep It Thriving
Care Guide
Do
- Keep soil consistently moist 🌱
- Provide dappled shade for optimal growth
- Mulch to conserve moisture and regulate soil temperature
- Fertilize lightly in spring
- Prune dead or damaged fronds carefully
Don't
- Avoid direct, harsh sunlight that can scorch fronds ❌
- Do not let soil dry out completely
- Refrain from over-fertilizing which can cause weak growth
- Avoid compacted or poorly draining soil
Seasonal Care Calendar
| Task | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Divide | ||||||||||||
| Mulch | ||||||||||||
| Plant | ||||||||||||
| Spring Cleanup |
Watch Out For
Pests & Diseases
Common Pests
Common Diseases
In the Garden
Landscape Uses & Companions
Landscape Uses
Companion Plants
Multiply
Propagation Methods
Good to Know
Common Questions
Christmas Fern questions
What zones can Christmas Fern grow in?
Christmas Fern is hardy in USDA Zones 4–9. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.
Is Christmas Fern deer resistant?
Yes — Christmas Fern is rated deer-resistant. Deer typically pass it over, though extreme hunger can override any plant's defenses.
When does Christmas Fern bloom?
Christmas Fern typically blooms in early spring through late spring. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.
Does Christmas Fern need full sun?
Christmas Fern does best in part shade.
Is Christmas Fern drought tolerant?
Yes — once established (usually after the first full season), Christmas Fern handles dry spells with minimal watering. Water deeply its first year to build the root system that makes that possible.
More Polystichum to compare
Western Sword Fern
Polystichum munitum
Soft Shield Fern
Polystichum setiferum
Makino's Holly Fern
Polystichum makinoi
Japanese Tassel Fern
Polystichum polyblepharum
Plumosomultilobum Soft Shield Fern
Polystichum setiferum 'Plumosomultilobum'
Braun's Holly Fern
Polystichum braunii
Keep exploring
Explore the genus
Grow Christmas 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.