Athyrium arcuatum
Athyrium arcuatum
arched lady fern
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Taxonomy
Family Athyriaceae · Genus Athyrium
Common Names
arched lady fern
Context
nativeRegion
East Asia, especially Japan and adjacent China and Korea.
usdaZones
Hardy in USDA zones 5–8.
companionPlants
Hosta, Trillium, Polygonatum, Astilbe
culturalUses
Primarily cultivated as an ornamental fern in shaded woodland gardens and borders.
Care
Care Requirements
LightPrefers partial to full shade; avoid direct sunlight which can scorch fronds.
WateringKeep soil consistently moist but not waterlogged; do not let dry out.
SoilRich, humusy, well-drained soil with good moisture retention.
FertilizerApply a balanced, diluted liquid fertilizer in spring if necessary; otherwise, compost as top-dressing suffices.
HumidityPrefers high to moderate humidity; avoid very dry air.
TemperatureHardy in cool to temperate climates; ideal temperature range 10–22°C (50–72°F).
Growth & Life Cycle
HabitDeciduous, clumping fern with gracefully arching fronds.
Mature SizeTypically attains 40–60 cm (16–24 in) in height and width.
Growth RateModerate growth rate.
BloomingDoes not flower; reproduces via spores on frond undersides.
DormancyDormant in winter, fronds die back to the ground.
Propagation
MethodsSpore sowing, Division of mature clumps
DifficultyModerate; division is easiest for gardeners.
Best SeasonEarly spring or autumn for division; spring for spore sowing.
Maintenance & Notes
PruningRemove old or damaged fronds in late winter or early spring before new growth.
RepottingRepot only when clumps outgrow their space or for division; otherwise minimal disturbance is preferred.
Pests & DiseasesGenerally pest-resistant; may rarely encounter slugs or snails. Fungal root rot if soil is poorly drained.
ToxicityNon-toxic to humans and pets.
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