Helleborus argutifolius

Spiny Hellebore

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Evergreen perennial shrub with spiny grey-green leaves and nodding greenish flowers in late winter. Hardy Mediterranean native.
yard Outdoor plants wb_sunny Shade / Half-shade pets Not pet-safe
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Plant Details

Common Name Spiny Hellebore
Family Ranunculaceae
Genus Helleborus
Species Argutifolius
Origin Corsica, Sardinia
Blooming Late Winter to Early Spring (Dec-Apr)
Leaf Color Grey-green / Dark green
Sunlight Shade / Half-shade
Category Outdoor plants
Pet Friendly close No
yard

Care & Maintenance

terrain
Soil

Rich, well-drained soil, neutral to alkaline pH preferred. Avoid waterlogging.

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Watering

Keep soil moist during active growth; reduce watering once foliage dies back in summer dormancy.

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Sunlight & Care

Prefers partial shade or dappled light, tolerates full sun in cooler climates. Protect from harsh afternoon sun.

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Fertilization

Apply compost or slow-release fertilizer in early spring before flowering begins.

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Pruning

Remove dead leaves and spent flower stalks after blooming to maintain plant tidiness.

Pest Control Aphid Leaf Miner Slug Snail

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

local_florist Flowering Period 5 months
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
eco Leaf Persistence 12 months
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
thermostat

Growing Parameters

thermostat
Temperature
14° – 86°
Fahrenheit
Ideal ambient air temperature range for healthy growth
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Humidity
40% – 75%
% relative
Optimal relative air humidity the plant thrives in
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Light (LUX)
500 – 8000
Lux
Ambient illuminance level at the plant's surface
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Light (PAR)
10 – 25
mmol/m²/s
Photosynthetically active radiation (PAR) intensity
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Soil Moisture
25% – 60%
% volumetric
Water content in the growing medium
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Soil EC
300 – 1500
mS/cm
Electrical conductivity (nutrient concentration in soil water)

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