Essentials
At a Glance
Plant Type
Fern
Height
30 inches
Width
36 inches
Light
Partial Sun, Shade
Zones
4, 5, 6, 7, 8, 9
Water
Consistent moisture
Humidity
High humidity preferred
Lifespan
Perennial
Native To
North America
Toxicity
Toxic to horses and livestock if ingested
The Story
Plant Bio
Onoclea sensibilis, commonly known as sensitive fern, is a perennial fern with broad, coarsely-divided sterile fronds, providing a lush ground cover in shaded, moist environments. The common name 'sensitive fern' refers to its extreme sensitivity to the first frost, which causes the green fronds to die back immediately. Dark, bead-like fertile fronds persist through winter.
Bloom Period:
Uses & Benefits:
Marketplace
Where to Buy
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Planting
How to Grow
- Select a shaded, moist location for planting.
- Tuck fern spores or divisions into prepared soil, 6 weeks before last frost.
- Mist cuttings regularly to maintain humidity.
- Water consistently to keep soil moist, especially during dry spells.
- Mulch around the base to retain moisture and suppress weeds.
- Transplant in early spring to expand your fern patch.
Pro Tip
Keep soil consistently moist and provide shade for best growth.
Keep It Thriving
Care Guide
Do
- Water regularly to keep soil moist 🌱
- Mulch to retain soil moisture
- Provide shaded areas for optimal fern health
Don't
- Avoid direct sunlight which can scorch fronds ❌
- Do not let soil dry out completely
- Avoid heavy fertilizing that can damage roots
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
Sensitive Fern questions
What zones can Sensitive Fern grow in?
Sensitive Fern is hardy in USDA Zones 4–10. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.
Is Sensitive Fern deer resistant?
Yes — Sensitive Fern is rated deer-resistant. Deer typically pass it over, though extreme hunger can override any plant's defenses.
When does Sensitive Fern bloom?
Sensitive 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 Sensitive Fern need full sun?
Sensitive Fern does best in part shade.
Keep exploring
Explore the genus
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Grow Sensitive 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.
