Quercus ilex – Holm Oak / Evergreen Oak
Quercus ilex – Holm Oak / Evergreen Oak
1000 in stock
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Current Stock Height Guides
Current Stock Height Guides
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Trade Customers
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About Quercus ilex – Holm Oak / Evergreen Oak
Quercus ilex, commonly known as the Holm Oak or Evergreen Oak, is a majestic, long-lived evergreen tree with dense, rounded foliage and exceptional hardiness. Its leathery, dark green leaves have silver-grey undersides, creating a soft, two-toned effect that adds depth and texture to the landscape. Mature trees form a broad, spreading canopy that provides year-round shade and structure. Typically, it reaches 10–20 metres tall and 10–15 metres wide, though it can be pruned or shaped for formal and architectural plantings.
This Mediterranean species thrives in full sun and well-drained soils. Quercus ilex is highly drought and frost tolerant once established, and its strong root system makes it ideal for coastal and windy environments. Slow-growing but resilient, it is low-maintenance and adaptable, making it an excellent choice for both large estates and urban landscapes.
They look excellent as feature trees, in avenues, or as clipped specimens for formal gardens. The Holm Oak’s combination of rich evergreen foliage, longevity, and toughness makes it a classic choice for both traditional and modern designs.
Key Information to Know
Evergreen / Deciduous
Quercus ilex – Holm Oak / Evergreen Oak is an Evergreen (foliage year round) Tree
Mature Height & Width
Mature Height: 10–20 metres
Mature Width: 10–15 metres
Quercus ilex – Holm Oak / Evergreen Oak is expected to grow 20 – 40 cm per year (slow–moderate).
Frost Tolerance
Is Quercus ilex – Holm Oak / Evergreen Oak frost tolerant?
Quercus ilex – Holm Oak / Evergreen Oak is Frost Tolerant – Can handle light to moderate frost once established.
Flowering Information
Quercus ilex produces small, inconspicuous catkins in spring. These modest flowers are not ornamental and are followed by the classic oak acorns, which add subtle seasonal interest. The species is prized for its year-round foliage, strong architectural form and ability to maintain a lush green canopy in all seasons.
Native Information
Is Quercus ilex – Holm Oak / Evergreen Oak an Australian Native? No
Quercus ilex – Holm Oak / Evergreen Oak is Native to The Mediterranean region, including southern Europe and North Africa, where Quercus ilex grows naturally in coastal woodlands and dry rocky hills.
Wildlife Value
Its dense, evergreen canopy provides excellent shelter and nesting habitat for small birds, while the leathery foliage supports a variety of beneficial insects that contribute to a healthy ecosystem. The acorns also offer a seasonal food source for birds and wildlife, making the Holm Oak a highly valuable habitat tree in both gardens and larger landscapes.
Sunlight Information
Quercus ilex – Holm Oak / Evergreen Oak will thrive best in:
Preffered Soil
Quercus ilex performs best in well-drained sandy or loam soils with a neutral to alkaline pH. It will also tolerate poorer, drier soils provided drainage remains adequate. Avoid heavy clay or compacted ground unless significantly improved, as excess moisture can restrict root health and reduce growth. Keep the soil evenly moist during establishment, then gradually reduce watering as the tree matures.
Botanical Information
Botanical Information
Botanical Information
Common Name: Holm Oak / Evergreen Oak
Genus: Quercus
Botanical Species: Quercus ilex
Family: Fagaceae
Botanical Name: 10–20 metres
Landscape Uses
Landscape Uses
Quercus ilex – Holm Oak / Evergreen Oak works in an:
Planting, Spacing & Care
Planting, Spacing & Care
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Quercus ilex – Holm Oak / Evergreen Oak is expected to grow 20 – 40 cm per year (slow–moderate).
Root Ball Dimensions (Width × Depth) For Planting
Root Ball Dimensions (Width × Depth) For Planting
Use this as a reference when digging your planting hole. We recommend digging at least 10% wider than the dimensions below to encourage strong root development.
- 30cm Pot: 33cm (W) × 30cm (D)
- 40cm/45L Pot: 44cm (W) × 41.5cm (D)
- 50cm Pot / 70L Pot: 55cm (W) × 41.8cm (D)
- 100L Bag: 50.6cm (W) × 52.8cm (D)
- 150L Bag: 66cm (W) × 55cm (D)
- 200L Bag: 71.5cm (W) × 60.5cm (D)
- 300L Bag: 88cm (W) × 63.8cm (D)
- 400L Bag: 99cm (W) × 66cm (D)
- 500L Bag: 122cm (W) × 66cm (D)
- 750L Bag: 134cm (W) × 69cm (D)
- 1000L Bag: 146.3cm (W) × 71.5cm (D)
- 2000L Bag: 176cm (W) × 82.5cm (D)
Ideal Conditions
Ideal Conditions
Thrives in
Frost Tolerance
Frost Tolerant – Can handle light to moderate frost once established.
Drought Tolerance
As a young tree it requires regular deep watering to establish thoroughly. Once established, Holm Oak develops excellent drought tolerance and thrives in hot, dry conditions, thanks to its tough evergreen leaves and deep root system. It maintains strong vigour and canopy density with minimal supplementary watering, even in exposed or coastal sites.
Flowering Information
Flowering Information
Does Quercus ilex – Holm Oak / Evergreen Oak flower?
Flowering Period:
Flower Type:
Flower Colour:
Not Applicable
Quercus ilex produces small, inconspicuous catkins in spring. These modest flowers are not ornamental and are followed by the classic oak acorns, which add subtle seasonal interest. The species is prized for its year-round foliage, strong architectural form and ability to maintain a lush green canopy in all seasons.
Frequently Asked Questions
Frequently Asked Questions
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