How to Grow Christmas Fern
Wikimedia Commons
Christmas Fern
Polystichum acrostichoides
fernChristmas fern is a native North American evergreen fern prized for its glossy, deep green fronds that remain vibrant year-round, making it an excellent choice for shaded woodland gardens. Its leathery fronds resemble Christmas greenery, earning its common name. It's one of the most cold-hardy native ferns and adapts well to mixed shade gardens and naturalized settings.
When should you plant Christmas Fern in your zone?
Get a personalized planting timeline — when to start seeds, transplant, and harvest — based on your USDA zone and local frost dates. Free to start.
Example Christmas Fern timeline · Pittsburgh, PA (Zone 6b)
-
Plant Christmas Fern
Around Apr 17Near Pittsburgh's average last spring frost.
-
Tend & protect
Late spring–summerWatering, feeding, and pest-watch reminders.
-
Harvest Christmas Fern
Late summer into fallBefore the first fall frost (≈ Nov 8)
Sample dates for Pittsburgh, PA. Sign up to get exact Christmas Fern dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in zones 3-9, highly cold-tolerant and excellent for northern gardens
Sign up free to see if Christmas Fern grows in your zone — and get a personalized planting timeline.
Get my Christmas Fern timeline →Growth Stages
Spore Germination
4-8 weeksMicroscopic spores develop into small green heart-shaped gametophytes (prothalli) on moist media
Requires high humidity, consistent moisture, and shade. Provide misting and maintain temperatures around 60-70°F.
Sporophyte Development
2-3 monthsFirst tiny fronds with visible leaflets emerge from the gametophyte; the young fern establishes rhizoid roots
Maintain high humidity and moderate light. Keep media consistently moist but avoid standing water.
Juvenile Fern
3-6 monthsSmall fern with short fronds develops, reaching 2-6 inches in height; fronds are lighter green and less leathery than mature plants
Gradually acclimate to outdoor shade conditions. Maintain consistent moisture and provide humid environment. Pinch back if needed.
Vegetative Growth
Ongoing year-round; peak spring growthEstablished fern produces increasingly robust fronds; glossy deep green color develops and fronds reach mature height of 12-24 inches
Maintain consistent moisture and humidity. Add leaf mold mulch in fall. Remove dead fronds. Divide established clumps if desired.
Spore Maturation
Late summer through fall; spores mature August-OctoberFertile fronds (typically inner fronds) develop brown spore-bearing structures (sori) on the undersides of leaflets, appearing as neat rows of dots
Maintain humidity to allow spore dispersal. If propagating, collect fronds with mature sori in late summer to fall. Do not remove spore-bearing fronds unless overcrowded.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
-
Inspect regularly; remove by hand or with soft brush dipped in horticultural oil. Improve air circulation to reduce populations.
-
Increase humidity through misting; spray undersides of fronds with water or insecticidal soap if infestation occurs.
-
Remove with alcohol-dampened cotton swab; apply neem oil if severe. Isolate affected plants.
-
and
Handpick early morning or evening; create copper barriers; encourage ground beetles and toads. Apply diatomaceous earth around planting area.
-
Not typically a direct pest to fern but manage nearby hemlock hosts. Maintain fern health through proper moisture.
Uses
Holiday Decorations & Greenery
HouseholdThe evergreen, deeply lobed fronds with glossy appearance make Christmas fern ideal for cutting for winter holiday arrangements, wreaths, and table centerpieces without killing the plant. [source]
Botanical Illustration & Pressing
CraftThe symmetrical, attractive frond structure is popular for pressed flower projects, herbarium specimens, and botanical art due to its beautiful leaf form and the ability to press cleanly. [source]
Traditional Native American Herbal Uses
MedicinalHistorically used in Appalachian folk medicine as a rheumatism and kidney remedy; modern herbalists may use it in teas or poultices, though clinical evidence is limited. [source]
Shade Garden Habitat
WildlifeProvides shelter, nesting sites, and microhabitat for beetles, spiders, small birds, and beneficial insects. The moist soil beneath ferns supports earthworms and soil organisms crucial for ecosystem health. [source]
Edible Fiddleheads (Specialty)
CulinaryWhile not typically harvested, the young unfurling fronds (fiddleheads) of some fern species are considered edible delicacies in certain cuisines; some sources indicate Christmas fern fiddleheads may be edible when very young, but this is not standard culinary practice. [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
Christmas fern is ornamental and not harvested for consumption. Fronds can be carefully cut for holiday greenery arrangements, cutting only a few outer fronds per plant. Spores can be collected in late summer/fall by placing mature fronds face-down on white paper overnight to gather spore dust. Harvest fronds for holiday use in moderation to avoid weakening the plant.
Fun Facts
- 🌱 Christmas fern earned its name because its evergreen fronds remain green throughout winter and were traditionally used as holiday greenery before the widespread adoption of cut Christmas trees.
- 🌱 Ferns reproduce through microscopic spores rather than seeds; a single mature Christmas fern frond can release millions of spores, making it possible to propagate entire plants from a small piece of frond.
- 🌱 Christmas fern is one of only a few native ferns to remain fully green and vibrant in winter, making it invaluable for winter woodland gardens and providing winter cover for ground-dwelling creatures.
Join 30,000 gardeners planning their gardens with LizPlants.
Get your personalized Christmas Fern planting timeline
Tell us your zip code and we'll calculate exactly when to start Christmas Fern seeds, transplant seedlings, and harvest — based on your USDA zone and local frost dates. Includes calendar reminders and printable task lists. Free to start.
Get my Christmas Fern timeline →