Common Alder (alnus glutinosa)

Common Alder (alnus glutinosa)

20-40cm
£0.84
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Common Alder (alnus glutinosa)

Common Alder (alnus glutinosa)

£0.84
Height
  • Hardiness: Fully hardy throughout the UK, tolerant to -20°C or lower; native species, highly adaptable to British climates including coastal and exposed sites.
  • Site: Full sun for best growth; tolerates partial shade; fast-growing conical tree (up to 25m tall, 8-10m spread) ideal for wet woodlands, riverbanks, windbreaks, wildlife gardens, or large spaces; special bacteria Inside root nodules fix nitrogen from the air allowing the roots to improve the soil.
  • Soil: Thrives in moist to wet, poorly drained or waterlogged conditions; tolerates poor, heavy clay, chalk, loam, sand, acid to alkaline pH; avoid very dry sites.
  • Planting time: Bare-root November to March (dormant season); container-grown ideally autumn or spring.
  • Planting method: Dig a wide hole (twice root spread width); incorporate organic matter if soil is poor; plant at the same depth as in the nursery (soil mark on stem); stake young trees; mulch base and water thoroughly.
  • Watering: Water regularly during the first 1–2 years, especially in dry periods; once established, highly tolerant of wet conditions and moderate drought.
  • Maintenance: Low; no regular feeding needed (nitrogen-fixing); minimal pruning.

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