Quercus glauca

Japanese Evergreen Oak

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Evergreen oak with glossy dark green leaves and glaucous undersides. Native to East Asia. Ideal for bonsai or sunny outdoor gardens. Drought tolerant when mature.
yard Outdoor plants wb_sunny Half-shade / Sun pets Not pet-safe
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Plant Details

Common Name Japanese Evergreen Oak
Family Fagaceae
Genus Quercus
Species Glauca
Origin Japan, Korea, China
Blooming Spring catkins, acorns mature in autumn
Leaf Color Dark green with glaucous underside
Sunlight Half-shade / Sun
Category Outdoor plants
Pet Friendly close No
yard

Care & Maintenance

terrain
Soil

Well-drained acidic soil mix, peat and sand for bonsai application

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Watering

Water regularly during growing season, allow topsoil to dry between waterings. Reduce in winter dormancy.

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Sunlight & Care

Requires full sun exposure for optimal growth and coloration, tolerate partial shade in summer heat

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Fertilization

Apply balanced fertilizer monthly from April to September. Avoid fertilizing during winter.

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Pruning

Prune in late winter or early spring to maintain shape. Remove dead wood and thin canopy for air circulation.

Pest Control Aphid Caterpillar Mite Scale Insect

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
agriculture Harvesting 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
thermostat

Growing Parameters

thermostat
Temperature
23° – 104°
Fahrenheit
Ideal ambient air temperature range for healthy growth
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Humidity
30% – 80%
% relative
Optimal relative air humidity the plant thrives in
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Light (LUX)
3000 – 60000
Lux
Ambient illuminance level at the plant's surface
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Light (PAR)
15 – 60
mmol/m²/s
Photosynthetically active radiation (PAR) intensity
water
Soil Moisture
20% – 70%
% 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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