Holm Oak
Quercus ilex
About this plant
Holm Oak is an evergreen oak tree known for its dense, dark green leaves that have a leathery texture. It produces acorns and has a rounded, spreading crown. This tree is valued for its hardiness and ability to tolerate dry, poor soils. It is often used in landscaping, parks, and as a shade tree.
Taxonomy
- Genus
- Quercus
- Family
- Fagaceae
- Higher classification
- Fagales
- Plant type
- Tree
- Lifespan
- Perennial
Origin & Distribution
- Native region
- Mediterranean region, Southern Europe, North Africa
- Distribution
- Widely cultivated in Mediterranean climates and warm temperate regions worldwide
Care
- Light preference
- Full sun
- Suitable locations
- Outdoor, Balcony, Greenhouse
- Preferred window facing
- South-facing, West-facing
- Watering frequency
- Moderate
- Watering interval
- 7–14 days
- Humidity
- Normal
- Minimum
- -15 °C
- Maximum
- 40 °C
- Optimal
- 15-30 °C
- USDA hardiness zones
- 7-10
- Soil pH
- 6.0-7.5
- Soil type
- well-draining loam
Watering. Water regularly when young to establish roots, then the tree is drought tolerant and needs less frequent watering.
Fertilizing. Fertilize young trees in early spring with a balanced fertilizer to support growth. Mature trees generally do not require much feeding.
Holm Oak is a hardy tree that tolerates dry conditions and poor soils well. It needs full sun and moderate watering, especially when young. It can handle drought once established but grows best with occasional watering. Minimal maintenance is required once mature.
Propagation
- Propagation methods
- Seeds, Cuttings
- Care difficulty
- Medium
Ornamental features
- Flowering
- Yes
- Flowering period
- spring
Evergreen dark green leaves with a leathery feel, rounded crown shape, and acorn production.
Toxicity & Safety
- Toxic to humans
- Non-toxic
- Toxic to pets
- Non-toxic
- Weed potential
- Not considered a weed
Safe around children and pets.
Common problems
Susceptible to root rot if overwatered or planted in poorly drained soil. Occasionally affected by leaf miners or fungal leaf spots.
Uses
Used mainly as an ornamental tree for shade and landscaping. It also helps prevent soil erosion and can be used for timber and firewood.
Notes
Prune young trees lightly to maintain shape. Repot only when the root system outgrows the container if grown in pots. Holm Oak is quite resilient but avoid waterlogging its roots.