Leontopodium japonicum

Japanese Edelweiss

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A perennial alpine herb from East Asia featuring woolly grey-green leaves and distinctive white bracts surrounding small yellow flower heads in late spring.
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Plant Details

Common Name Japanese Edelweiss
Family Asteraceae
Genus Leontopodium
Species Japonicum
Origin Japan, China, Korea
Blooming Late Spring to Early Summer, small yellow flowers with white bracts
Leaf Color Silver-grey / Grey-green
Sunlight Sun
Category Outdoor plants
Pet Friendly check Yes
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Care & Maintenance

terrain
Soil

Well-draining alkaline soil with sand or gravel. Avoid heavy clay or water retention.

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Watering

Water moderately during active growth. Allow topsoil to dry between watering. Reduce significantly in winter dormancy.

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Sunlight & Care

Full sun exposure required for compact growth and flowering. Tolerates partial shade in hot climates.

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Fertilization

Minimal feeding. Apply diluted liquid fertilizer monthly during spring growing season only if soil is poor.

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Pruning

Deadhead spent flowers immediately after blooming. Cut back foliage in late autumn to prevent rot.

Pest Control Aphid 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 2 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
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Growing Parameters

thermostat
Temperature
23° – 82°
Fahrenheit
Ideal ambient air temperature range for healthy growth
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Humidity
30% – 60%
% relative
Optimal relative air humidity the plant thrives in
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Light (LUX)
3000 – 40000
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
10% – 40%
% 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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