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Italian Alder (alnus cordata)
£1.32
- Hardiness: Fully hardy throughout the UK, tolerant to -20°C or lower; well-suited to British conditions, including exposed and coastal sites.
- Site: Full sun preferred for best growth; tolerates partial shade; fast-growing conical tree (up to 25m tall, 8m spread) ideal for windbreaks, screens, urban planting, or specimen in large spaces; pollution and wind resistant.
- Soil: Thrives in fertile, moist but well-drained soil; highly tolerant of poor, dry, compacted, chalky, or poorly drained conditions; suits acid to alkaline pH; nitrogen-fixing roots improve poor soils.
- Planting time: Bare-root November to March (dormant season); container-grown ideally autumn or spring.
- Planting method: Dig a hole twice as wide as the root spread; incorporate organic matter if soil is very poor; plant at the same depth (soil mark on stem); stake young trees; mulch base (avoid trunk contact) and water thoroughly.
- Watering: Water regularly during the first 1–2 years, especially in dry periods; once established, highly tolerant of both drought and wet conditions.
- Maintenance: Low; minimal pruning needed; no regular feeding as it fixes nitrogen; monitor for occasional pests like aphids or leaf miners.