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Tree Species: Holly (Ilex aquifolium)

Oliver Lewis avatar
Written by Oliver Lewis
Updated this week
Holly in Warley Gap

1. Native / Non-native Status


Native to the UK and much of western and southern Europe.

2. Evergreen / Deciduous

Evergreen – keeps its glossy green leaves year-round.

3. Appearance

  • Leaves: Thick, glossy, dark green leaves with wavy edges. On younger growth, leaves often have sharp spines; on older/shaded branches, they may be smoother.

  • Bark: Smooth, grey, and thin, becoming slightly fissured with age.

  • Flowers/Fruit/Seeds: Small, white, four-petalled flowers appear in late spring. Female trees (if pollinated) produce bright red berries that last through winter.

  • Overall shape: Can grow as a multi-stemmed shrub or small tree with a dense, rounded crown.

4. Typical Size


Usually 3–8 m.

5. Habitat & Range


Widespread across the UK. Found in woodlands (especially as understory), hedgerows, churchyards, parks, and gardens. Tolerates shade very well.

6. Distinctive Features (ID tips)

  • Glossy, spiny leaves that remain green in winter.

  • Bright red berries in winter (on female plants only).

  • Shade-loving, often forming dense evergreen clumps in woods.

7. Seasonal Changes

  • Spring: White flowers appear.

  • Summer: Dense, glossy foliage provides cover.

  • Autumn: Berries ripen (on female trees).

  • Winter: Evergreen leaves and red berries stand out when most other trees are bare.

8. Human Uses

  • Traditionally used for Christmas decorations (wreaths, garlands).

  • Historically planted as protective hedging (spiny leaves deter livestock and intruders).

  • Hard, white wood valued for tool handles, inlays, and engraving.

  • Leaves and berries are mildly toxic if eaten.

9. Wildlife Value

  • Berries provide winter food for birds (e.g. thrushes, blackbirds, redwings).

  • Dense foliage offers shelter for small mammals and nesting birds.

  • Flowers attract pollinators like bees and hoverflies.

10. Fun Fact / Cultural Note

  • Holly has been a symbol of protection and eternal life since ancient times. Druids and Romans used it in midwinter festivals, and it later became closely tied to Christmas traditions.

  • Male and female flowers grow on separate trees (dioecious), so only female holly produces berries — and only if a male is nearby for pollination.

11. Planting & Care (Basic Instructions)

  • Best time to plant: Late autumn or early spring.

  • Soil: Prefers moist but well-drained soil; tolerates clay, loam, or sandy soils; grows best in slightly acidic conditions but is adaptable.

  • Light: Thrives in partial shade but can also grow in full sun or full shade.

  • Watering: Water regularly for the first year until established; generally drought-tolerant once mature.

  • Spacing: Allow 3–5 m for individual trees; for hedges, plant 30–60 cm apart.

  • Aftercare: Mulch around the base to retain moisture. Young plants may need staking. Prune in late winter or early spring to shape or control size.

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