- The Black Alder tree can be very versatile. While it prefers and thrives in wet, humid soil, it can also grow in a place with poor soil conditions. The Alder is an average size as it doesn’t surpass a maximum height of 100 feet.
Black Alder - Alnus glutinosa
Black Alder also has excellent durability and can even withstand a certain amount of flooding. Also referred to as the Common Alder or European Alder, the Black Alder is considered to be a medium-sized tree, reaching mature heights between 66'-98' tall. On rarer occasions, this deciduous tree can grow as tall as 121'. It is prevalent throughout the world, but native to Europe, the United Kingdom, and Ireland. It has since found its way into the United States, Asia, Chile, Australia, New Zealand, South Africa, and Canada. It is an adaptable tree, with a USDA hardiness zone of 2-8, which may explain its widespread success as a species. However, it prefers a wet climate with moist soil and full sunlight. Soil should ideally be composed of sandy or silty loam and have a ph that ranges from acidic to neutral. Homeowners with a lake or pond may choose to place this magnificent tree around a body of water, like a lake or a pond, as it thrives in moist areas. Home landscaping may also benefit from this tree because it creates an "opening" effect. It can withstand more difficult environments due to its rare ability to draw and convert nitrogen from the soil. It produces distinctive flowers called catkins, which are elongated, red to yellow, and adapted for wind-pollination. Its seeds fall from the tree as spindled, egg-shaped cones. Some of the Black Alder's prized visual characteristics are its classic green, glossy leaves and overall round and narrow shape. When fully mature, the trunk of this tree is slim and grey-toned; it may even develop more than one trunk. A wide variety of wildlife is guaranteed to flock to this plant. The Ruffed Grouse, White-Winged Crossbill, Eastern Goldfinch, and Beaver are some of the multitudes of species the Black Alder attracts.