Description: Also known as Japanese Alder, one of Birch family, Typically 15-20 meters (50-65 feet), but can reach up to 30 meters (100 feet) in ideal conditions. Alternate, simple, obovate to elliptic, with a pointed tip and serrated margins. The leaves are dark green on the upper surface and lighter below. Small, woody cones that contain winged seeds. The cones persist on the tree through winter.
Distribution/Location: Japan, Korea, China, Taiwan, and the Russian Far East. Typically found in moist, well-drained soils along rivers, streams, and wetlands. It thrives in both lowland and mountainous regions. Has been introduced to various regions outside its native range, including parts of Europe and North America, where it is sometimes used for erosion control and as an ornamental tree.
Environmental Concerns: While not typically considered highly invasive, Japanese alder can spread and establish itself in suitable habitats outside its native range, potentially outcompeting native vegetation. Being a nitrogen-fixing species, it can alter soil composition by increasing nitrogen levels, which may affect native plant communities.
Other Information: Often planted for stabilizing riverbanks and preventing soil erosion due to its fast growth and extensive root system. Enhances soil fertility through nitrogen fixation, which can benefit subsequent plantings in reforestation and restoration projects.
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