Quercus ilex

Holm Oak

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Robust evergreen tree with leathery dark green leaves and grey undersides. Native to the Mediterranean basin. Ideal for sunny gardens or very bright indoor conservatories.
yard Outdoor plants wb_sunny Sun pets Not pet-safe
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Plant Details

Common Name Holm Oak
Family Fagaceae
Genus Quercus
Species Ilex
Origin Mediterranean Basin
Blooming Dioecious, catkin flowers produced in spring
Leaf Color Dark green glossy top, greyish underside
Sunlight Sun
Category Outdoor plants
Pet Friendly close No
yard

Care & Maintenance

terrain
Soil

Well-drained loamy soil, tolerant of calcareous substrates; avoid waterlogging.

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Watering

Water regularly when young, allow surface to dry between waterings once established. Reduce in winter dormancy.

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Sunlight & Care

Requires full sun outdoors; indoors needs maximum southern exposure or grow lights.

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Fertilization

Apply balanced slow-release fertilizer in early spring before new growth begins.

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Pruning

Prune lightly after flowering if shape control needed; remove dead or diseased wood.

Pest Control Aphid Oak Processionary Moth Scale Insect Spider Mite

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° – 100°
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)
6000 – 40000
Lux
Ambient illuminance level at the plant's surface
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Light (PAR)
1200 – 3500
mmol/m²/s
Photosynthetically active radiation (PAR) intensity
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Soil Moisture
10% – 65%
% 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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