Eryngium Magical Star

Sea Holly 'Magical Star'

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A striking perennial sea holly featuring metallic blue-green foliage and spiky thistle-like flower heads, ideal for drought-tolerant landscapes.
yard Outdoor plants wb_sunny Sun pets Not pet-safe
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Plant Details

Common Name Sea Holly 'Magical Star'
Family Apiaceae
Genus Eryngium
Species N/A
Variety Magical Star
Origin Europe / Asia (Cultivar)
Blooming Summer to early autumn with striking blue flower heads.
Leaf Color Grey-green / Metallic blue
Sunlight Sun
Category Outdoor plants
Pet Friendly close No
yard

Care & Maintenance

terrain
Soil

Well-drained sandy or loamy soil; prefers alkaline conditions and low fertility.

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Watering

Drought tolerant once established; water moderately only during establishment. Avoid wet foliage.

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Sunlight & Care

Requires full sun exposure for best flowering; insufficient light leads to leggy growth.

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Fertilization

Low nutrient requirements; avoid excessive nitrogen to prevent flopping and rot.

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Pruning

Cut back spent flower heads after blooming; cut plants to ground in late autumn.

Pest Control Aphid Caterpillar 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 4 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
5° – 95°
Fahrenheit
Ideal ambient air temperature range for healthy growth
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Humidity
20% – 60%
% relative
Optimal relative air humidity the plant thrives in
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Light (LUX)
3000 – 50000
Lux
Ambient illuminance level at the plant's surface
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Light (PAR)
1200 – 4500
mmol/m²/s
Photosynthetically active radiation (PAR) intensity
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Soil Moisture
10% – 45%
% 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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