Columner english oak - quercus robur
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🌳 Identity
- Scientific name: Quercus robur ‘Fastigiata’ (columnar form of the English oak)
- Common name: Columnar English Oak
- Family: Fagaceae
- Type: Deciduous ornamental tree with a very narrow, vertical habit
📐 Main characteristics
| Characteristic | Detail |
|---|---|
| Adult height | Approximately 15 to 20 m (≈ 50 to 65 ft) in optimal conditions. |
| Width/Spread | Very narrow: typically 3 to 6 m wide (≈ 10 to 20 ft). |
| Habit | Columnar, very vertical branches, few lateral branches. |
| Foliage | Classic lobed leaves of English oak, dark green in season, turning yellow-brown in fall. |
| Flowering/Fruiting | Unremarkable flowers (yellow-green catkins in spring). Fruit: oval acorns, often long, persistent after leaf fall. |
| Exposure | Full sun recommended. |
| Soil & Conditions | Well-drained soil, tolerates a wide range of textures (sandy, loamy, clay). Drought tolerant once established. |
| Hardiness Zone | USDA Zones 4 to 8. |
🌼 Ornamental features
- Its upright, narrow habit makes it an excellent choice for urban gardens, tree lines, or situations where space is limited in width.
- The dark, dense foliage provides a beautiful presence.
- Add decorative acorns that can persist and attract wildlife.
- Good durability and longevity, as is typical of English oaks.
- Large structural tree, can become a “column” element in the landscape.
🧤 Cultivation & care
Planting
- Choose a location in full sun.
- Prepare a sufficiently large planting hole, loosen the surrounding soil, and ensure good drainage.
- Ideally, install mulch around the base to retain moisture and limit weeds.
Regular care
- Water regularly during the first year until well established. Once established, the tree is drought tolerant.
- Minimal pruning: remove only dead, diseased, or very low branches.
- Given its columnar shape, little pruning is required.
Soil & conditions
- Adapts to various soil types, but avoid perpetually waterlogged soils.
- In urban areas, tolerates pollution and difficult conditions better than some more fragile trees.
⚠️ Points to note
- Although narrower than many traditional oaks, allow sufficient space for its considerable height.
- When planting in rows or under power lines, ensure it is planted at a sufficient distance to avoid future conflicts.
- Acorns may fall and cause a nuisance in pedestrian areas or along curbs.
- As with all oaks, ensure that the trunk is protected during the early stages of growth (mowing, impact, mulch that is too high).
- If you want spectacular fall foliage, this variety is not the most colorful compared to other deep red/orange foliage.
