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Plant guide

Evergreen wood fern.

Dryopteris intermedia

Pronounced dry-OP-ter-iss in-ter-ME-dee-uh

Also known as Evergreen Wood Fern, Fancy Fern, Intermediate Woodfern, Intermediate Wood Fern, American Shield Fern, Common Wood Fern, Evergreen Shield Fern, Fancy Wood Fern

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intermediate wood fern
Photo by Michael J. Papay (CC BY) via iNaturalist

This lovely fern is a classic choice for adding texture to shady garden spots. It stays green through most of the winter in milder climates, which is why it's a favorite among woodland gardeners. You'll find it's quite resilient once it gets settled in its new home.

Another photo of Evergreen wood fern
Photo by Carrie Seltzer (CC BY) via iNaturalist

At a glance

Care level
Easy
Plant type
Fern
Light
Partial shade to full shade
Indoor light
Medium light
Water
Every 3 to 7 days
Mature size
1 to 3 feet tall
Growth rate
Medium
Hardiness
USDA 3 to 8
Bloom time
None, this is a spore-bearing fern.

Care

Keep the soil consistently moist but never soggy to mimic its natural forest floor habitat. Watch for browning frond tips, which usually signal that the air is too dry or the soil has dried out too much. A layer of organic mulch helps keep the roots cool and retains necessary moisture.

Watering
Water whenever the top inch of soil feels dry to the touch.
Feeding
Apply a balanced, diluted liquid fertilizer during the active growing season.
Pruning
Trim away old or damaged fronds in early spring before new growth emerges.
Repotting
Move to a slightly larger container only when the roots have filled the current pot.
Soil
Rich, humusy, well draining soil
Soil pH
Acidic to neutral
Temperature
-30 to 30°C
Humidity
60 to 90%
Drought tolerance
Low
Lifespan
Perennial, typically 10 to 20 years.
Deer and rabbits
High

Signs it needs repotting

  • Roots growing out of the drainage holes
  • Water running straight through the pot without soaking in

Safety

People
The plant is not known to be toxic to humans.
Children
The fronds are generally safe but should not be ingested by small children.
Contact allergens
Some individuals may experience mild skin irritation from handling the fronds.
Airborne allergens
Spore release in late summer can occasionally trigger respiratory sensitivity in those prone to allergies.
Edibility
This plant is not considered edible and should not be consumed.

How to identify it

  • Finely divided lacy fronds
  • Triangular shaped frond blades
  • Evergreen to semi evergreen foliage
  • Scaly brown stipes
  • Clumping growth habit
Height
0.3 to 0.9m
Spread
0.3 to 0.9m
Leaves
green, dark green, semi-evergreen
Flowers
0cm

Problems to watch for

  • Scale · Small sap-sucking insects that appear as brown bumps on the underside of fronds.
  • Fern Anthracnose · Fungal spots that appear on fronds during periods of high humidity and poor air circulation.

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Growing it

Propagation
division, spores
When to plant
spring, autumn
Overwintering
Leave the old fronds in place until early spring to protect the crown, then trim them back just as new growth begins to emerge.
In containers
It grows well in containers at least 30 cm wide, provided the soil remains damp.

Division

  1. 1. Carefully dig up the clump in early spring.
  2. 2. Use a sharp knife to divide the root mass into smaller sections.
  3. 3. Replant immediately in moist, organic-rich soil.

Plant these in groups of three or five to create a lush, natural woodland effect.

Grows well with

  • Hosta · They share similar shade and moisture requirements.
  • Wild Ginger · It makes a lovely low growing ground cover beneath the fern.

Similar species

Science

Family
Dryopteridaceae
Genus
Dryopteris
Order
Polypodiales
Class
Polypodiopsida
Native range
Eastern North America.
Conservation
This species is common and secure throughout its native range.

It survives by colonizing cool, moist, shaded forest floors where it competes for light beneath the tree canopy.

Value to wildlife
provides cover for small woodland creatures
Uses
woodland gardens, shade borders, ground cover

Through the year

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Flowering
Fruiting
Foliage

Ecological indicators

Salinity
1/9
Soil reaction
5/9
Light
2/9
Temperature
4/9
Moisture
7/9
Nutrients
5/9

Taxonomy resolved against GBIF.

Questions people ask

Does it need full sun?
No, it prefers partial to full shade to keep its fronds from scorching.
Can I grow it in a pot?
Yes, it does well in containers if kept consistently moist and out of direct sun.

Where the name comes from

The name Dryopteris comes from the Greek words for oak and fern, while intermedia refers to its status as a middle ground between related species.

Good to know

  • It is often called the intermediate woodfern because its characteristics fall between other similar species.
  • The fronds are finely divided, giving them a lacy and delicate appearance.
  • It thrives in the dappled light of deciduous forests.

Also in

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This guide was generated with AI on and checked against GBIF taxonomy. It is general information, not horticultural or veterinary advice. Read about how we build these guides.