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Alnus rubra - Red Alder

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Alnus rubra is more commonly recognized as the Red Alder, a tall and captivating deciduous tree hailing from the respected Birch family. Boasting a growth potential of up to an imposing 90 feet, this versatile tree is a testament to nature’s grandeur, with its slick, grey bark that gently matures to an unexpected reddish hue. The Red Alder's leaves are a vibrant green, delicately serrated like an artist's finest sketch and undergo a wonderful transition to a stunning yellow in the fall. This aesthetic appeal is complemented by the late winter to early spring display of unique catkin flowers. Preferring well-drained, moist soils with ample exposure to the sun, this adaptable tree is well-suited for a wide variety of landscapes. Beyond its aesthetics, the Red Alder is also a practical choice, famously contributing to several ecosystems by significantly enhancing soil fertility with its nitrogen-fixation capabilities. The Red Alder is, therefore, a remarkable choice for landscaping - it offers not only a majestic sight but also an ecological solution to improving soil health.

  • Size: Up to 90 feet tall
  • Flowers: Catkins, appear in late winter to early spring
  • Foliage: Green, serrated, oval-shaped leaves turning yellow in autumn
  • Water usage: Prefers well-drained, moist soils
  • Sun exposure: Partial to full sun
  • Soil Improvement: Contributes significantly to nitrogen fixation in the soil
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