Oak Fern
Gymnocarpium dryopteris
Not currently listed at our partner nurseries.
Essentials
At a Glance
Plant Type
Fern
Height
15 inches
Width
24 inches
Light
Partial Sun, Shade
Zones
4, 5, 6, 7, 8
Water
Moist
Humidity
High
Lifespan
Perennial
Native To
Northern Hemisphere
Toxicity
Non-toxic to humans and pets
The Story
Plant Bio
Gymnocarpium dryopteris, commonly known as Oak Fern, is a delicate, deciduous fern with lacy, bright green fronds that spreads via rhizomes to form attractive colonies in woodland shaded areas. Distinguished by its broadly triangular, finely-divided, tripinnate fronds held nearly horizontal on thin, wiry, black stems. The spreading habit makes it an excellent groundcover for shady areas.
Bloom Period:
Uses & Benefits:
Marketplace
Where to Buy
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Planting
How to Grow
- Tuck spores into moist soil in spring, keep consistently damp.
- Mist cuttings regularly to maintain humidity, take 4 weeks.
- Plant in shaded areas with rich, organic soil for best growth.
- Water regularly during dry spells, especially in summer.
- Mulch around base to retain moisture and suppress weeds.
- Divide clumps every 3-4 years in early spring for propagation.
Pro Tip
Keep soil consistently moist and shaded for optimal growth.
Keep It Thriving
Care Guide
Do
- Water regularly to keep soil moist 🌱
- Mulch to retain moisture and regulate temperature
- Divide clumps every few years for vigorous growth
Don't
- Avoid direct sunlight which can scorch fronds ❌
- Do not let soil dry out completely
- Refrain from over-fertilizing, too much nitrogen can harm
Seasonal Care Calendar
| Task | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Divide | ||||||||||||
| Fertilize | ||||||||||||
| Mulch | ||||||||||||
| 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
Oak Fern questions
What zones can Oak Fern grow in?
Oak Fern is hardy in USDA Zones 4–8. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.
Is Oak Fern deer resistant?
Yes — Oak Fern is rated deer-resistant. Deer typically pass it over, though extreme hunger can override any plant's defenses.
When does Oak Fern bloom?
Oak Fern typically blooms in early spring through late fall. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.
Does Oak Fern need full sun?
Oak Fern does best in part shade.
Keep exploring
Explore the genus
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Grow Oak 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.
