Onoclea sensibilis

Sensitive fern

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A deciduous perennial fern native to wetlands. Known for blue-green fertile fronds that turn brown after spore release. Thrives in moist, shady bog conditions.
yard Outdoor plants wb_sunny Shade / Half-shade pets Pet Friendly
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Plant Details

Common Name Sensitive fern
Family Dennstaedtiaceae
Genus Onoclea
Species Sensibilis
Origin North America, East Asia
Blooming Ferns reproduce via spores, not flowers. Fertile fronds appear in spring.
Leaf Color Blue-green to emerald green
Sunlight Shade / Half-shade
Category Outdoor plants
Pet Friendly check Yes
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Care & Maintenance

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Soil

Rich organic soil kept constantly wet; peat moss or bog mix suitable for marginal water gardens.

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Watering

High water requirement. Keep soil saturated at all times; tolerates standing water in summer.

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Sunlight & Care

Deep shade to partial shade. Direct sunlight will scorch the fronds quickly.

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Fertilization

Apply balanced slow-release fertilizer in early spring only during active growth.

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Pruning

Cut back dead fronds to ground level in late winter before new fiddleheads emerge.

Pest Control Scale Insect Slug Snail Spider Mite

These are the insects and pathogens that commonly interact with this plant, including pests, parasites, and organisms typically associated with its care.

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Seasonal Periods

eco Leaf Persistence 7 months
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
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Growing Parameters

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Temperature
5° – 86°
Fahrenheit
Ideal ambient air temperature range for healthy growth
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Humidity
60% – 95%
% relative
Optimal relative air humidity the plant thrives in
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Light (LUX)
800 – 5000
Lux
Ambient illuminance level at the plant's surface
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Light (PAR)
400 – 1200
mmol/m²/s
Photosynthetically active radiation (PAR) intensity
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Soil Moisture
70% – 90%
% volumetric
Water content in the growing medium
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Soil EC
200 – 800
mS/cm
Electrical conductivity (nutrient concentration in soil water)
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Common Problems

Something wrong with your Onoclea sensibilis? Select a symptom to diagnose and fix the issue.

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