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Japanese Holly Fern

Cyrtomium fortunei var intermedium

The Story

Plant Bio

Cyrtomium fortunei intermedia is a compact evergreen fern with gracefully arching fronds that feature finely divided, dark green foliage. It thrives in shaded, moist environments, adding elegant texture to shaded garden areas.

This cultivar is distinguished by its denser, more compact growth habit and slightly broader fronds, making it particularly suitable for container planting and shaded garden borders.

Uses & Benefits:

Provides lush evergreen foliage year-round, enriching shaded garden areas.

Helps control soil erosion in moist, shady spots.

Supports native fern species and maintains forest understory health.

Essentials

At a Glance

Plant Type

Fern

Height

24 inches

Width

24 inches

Light

Partial Sun, Shade

Zones

6, 7, 8, 9

Water

Consistent moisture

Humidity

High humidity preferred

Lifespan

Perennial

Native To

East Asia

Toxicity

Non-toxic to humans and pets

Bloom period

Early spring – Late fall

In flower about 9 months of the year

Planting

How to Grow

Select a shaded location with moist, well-drained soil.
Tuck fern spores or young plants into prepared soil, ensuring roots are covered.
Mist regularly to maintain humidity, especially in dry environments.
Water consistently to keep soil moist but not waterlogged.
Mulch around base to retain moisture and suppress weeds.
Divide clumps every 3-4 years in early spring for propagation.

Pro Tip

Ensure consistent moisture and shade for healthy growth.

Keep It Thriving

Care Guide

Do

Keep soil consistently moist 🌱
Provide shade during hot summer days
Mulch to retain soil moisture

Don't

Avoid direct sunlight ❌
Do not let soil dry out completely
Over-fertilize which can cause legginess

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

Shaded woodland borderEvergreen groundcoverMoist shady corner

Companion Plants

Hosta AstilbeFerns Japanese maple

Multiply

Propagation Methods

Good to Know

Common Questions

Japanese Holly Fern questions

What zones can Japanese Holly Fern grow in?

Japanese Holly 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 Japanese Holly Fern deer resistant?

Not reliably. Deer may browse Japanese Holly Fern, especially tender spring growth — plan on repellents or fencing where pressure is high.

When does Japanese Holly Fern bloom?

Japanese Holly 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 Japanese Holly Fern need full sun?

Japanese Holly Fern does best in part shade.