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Alder (Alnus glutinosa) (Bare root)
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Alder (Alnus glutinosa)
The minimum purchase is 25 bare-root
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Alder (Alnus glutinosa)
Description
Alder (Alnus glutinosa) is a fast-growing, native Irish tree that thrives in damp or waterlogged soils, making it ideal for wetlands, riverbanks, and areas prone to flooding. With its distinctive rounded, glossy leaves and small cone-like fruits, Alder is both a practical and attractive choice for hedging, particularly in wetter environments. Known for its nitrogen-fixing ability, Alder improves soil fertility and supports a wide range of wildlife, making it an excellent addition to environmentally focused planting schemes.
Features
- Soil Enrichment: Alder is a nitrogen-fixing tree, meaning it improves soil fertility by converting atmospheric nitrogen into forms usable by plants. This makes it a great companion plant for mixed hedgerows and woodlands, contributing to overall soil health.
- Wildlife Habitat: The tree’s small, woody cones and catkins attract birds like goldfinches, while its dense foliage provides shelter for birds and small mammals. Alder is also beneficial for aquatic ecosystems, providing shade and habitat along rivers and streams.
- Water-Loving: Alder thrives in wet or poorly drained soils, making it ideal for planting in areas prone to flooding or near water sources. It stabilizes soil and helps prevent erosion along riverbanks and wetlands.
- Native Species: As a native Irish species, Alder supports local biodiversity, making it a valuable component of natural hedgerows and sustainable farming practices.
Maintenance
Alder is a robust, low-maintenance tree but benefits from a few key practices to ensure healthy growth.
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Planting: Alder grows best in moist, waterlogged, or poorly drained soils and can tolerate full sun or partial shade. It is often planted near rivers, ponds, or damp fields, but it can also tolerate drier conditions once established. Space plants about 1.5-2 meters apart when planting as part of a hedge or woodland scheme.
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Pruning: While Alder requires little pruning, young trees can be shaped to encourage strong, straight growth. Any damaged or weak branches can be removed in late winter or early spring to improve the tree’s structure. If used as a hedge, occasional trimming helps maintain its shape and density.
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Watering: Alder naturally thrives in wet areas, so additional watering is generally only necessary for young trees during their first growing season, or in particularly dry periods. Once established, they are very drought-tolerant.
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Pest & Disease Resistance: Alder is generally resistant to most pests and diseases, though it can occasionally be affected by phytophthora root rot in particularly waterlogged soils. Ensuring proper planting conditions will reduce this risk.
Ideal for ACRES Scheme Projects
Alder is a key species for ACRES Scheme projects, especially in areas where soil improvement, water management, or flood prevention are essential. Its ability to fix nitrogen, improve soil quality, and stabilize wetland areas makes it a valuable choice for farmers aiming to enhance the environmental value of their land while contributing to local biodiversity and soil health.
Alder (Alnus glutinosa) BR
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