Allium cernuum

Nodding Onion

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Allium cernuum è una pianta bulbosa perenne rustica originaria del Nord America, famosa per i suoi fiori rosa-viola pendenti. Ideale per giardini rocciosi o bordure soleggiate con suoli ben drenati.
yard Outdoor plants wb_sunny Half-shade / Sun pets Not pet-safe
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Plant Details

Common Name Nodding Onion
Family Amaryllidaceae
Genus Allium
Species Cernuum
Origin North America
Blooming Late spring to early summer, foliage dies back after flowering
Leaf Color Gray-green linear leaves
Sunlight Half-shade / Sun
Category Outdoor plants
Pet Friendly close No
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Care & Maintenance

terrain
Soil

Well-drained sandy loam or gravelly soil. Bulbs rot in heavy clay.

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Watering

Water moderately during active growth, dry out completely after foliage yellows to prevent bulb rot.

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Sunlight & Care

Full sun is required for robust flowering and growth. Tolerates some shade but blooms less.

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Fertilization

Apply balanced low-nitrogen fertilizer in early spring before emergence.

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Pruning

Cut back yellowed foliage completely after the growing season ends.

Pest Control Aphid Leaf Miner Onion Thrip

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 1 month
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
eco Leaf Persistence 4 months
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
thermostat

Growing Parameters

thermostat
Temperature
41° – 86°
Fahrenheit
Ideal ambient air temperature range for healthy growth
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Humidity
20% – 70%
% relative
Optimal relative air humidity the plant thrives in
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Light (LUX)
3000 – 20000
Lux
Ambient illuminance level at the plant's surface
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Light (PAR)
1500 – 3400
mmol/m²/s
Photosynthetically active radiation (PAR) intensity
water
Soil Moisture
10% – 50%
% volumetric
Water content in the growing medium
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Soil EC
300 – 1800
mS/cm
Electrical conductivity (nutrient concentration in soil water)

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