Alder - Wikipedia
WebAlders are trees that compose the genus Alnus in the birch family Betulaceae. The genus includes about 35 species [2] of monoecious trees and shrubs, a few reaching a large size, distributed throughout the north temperate zone with a few species extending into Central America, as well as the northern and southern Andes. [1] Description. Pollen.
12 Species of Alder Trees for Your Yard - The Spruce
WebJan 18, 2024 · The Spruce / Evgeniya Vlasova. Alder trees and shrubs ( Alnus spp.) are members of the Betulaceae family, more commonly known as the birch family. These deciduous trees are moderate to fast-growing and will grow at a rate of about two feet per year. The most notable features of all varieties of alder trees are their catkins and strobiles.
Alder Trees: Leaves, Bark, Flowers, Cones - Identification (Pictures)
WebNov 16, 2022 · Alders are large deciduous trees that grow well in wet areas. Alder ( Alnus) is a genus of flowering deciduous trees in the family Betulaceae. There are about 35 alder species, comprising of large trees and smaller shrub-like trees. Many species of alders grow between 66 and 100 ft. (20 – 30 m) tall.
Alder | Definition, Description, Tree, Wood, & Facts | Britannica
WebAlder, genus of about 30 species of ornamental shrubs and trees in the birch family (Betulaceae). Alders are distributed throughout the Northern Hemisphere and in parts of western South America on cool wet sites. Several …
Alder facts and information | Trees for Life
WebAlder (Alnus glutinosa) is the most common tree in wetland forests, and it improves soil fertility through its ability to fix nitrogen from the air. Distribution. Physical Characteristics. Reproduction. Ecological Relationships. Sources and further reading. Global Distribution.
Alder Tree: Key Facts — Forest Wildlife
WebAlder trees grow primarily near bodies of water in cooler temperate regions throughout the Northern Hemisphere. They can also be found at elevations up to 8,200 feet in parts of South America. The most notable physical feature of alder trees is their rounded female catkins, which mature into strobiles that look like small pine cones. These ...
Alnus glutinosa - Wikipedia
WebAlnus glutinosa, the common alder, black alder, European alder, European black alder, or just alder, is a species of tree in the family Betulaceae, native to most of Europe, southwest Asia and northern Africa. It thrives in wet locations where its association with the bacterium Frankia alni enables it to grow in poor quality soils.
Complete Guide to Alder Trees - BBC Gardeners World Magazine
WebApr 11, 2022 · All you need to know about alder trees, including how to grow and care for them. Alder tree ( Alnus glutinosa) is a native tree throughout Europe, including Britain and Ireland. It grows to a maximum height of 25m over around 50 years, and is short-lived, with a life expectancy of just 60 years.
Alnus rubra - Wikipedia
WebAlnus rubra is the largest species of alder in North America and one of the largest in the world, reaching heights of 20 to 30 metres (66 to 98 ft). The official tallest red alder (as of 1979) stands 32 m (105 ft) tall in Clatsop County, Oregon (US). [7] The trunks range from 25 to 50 centimetres (10 to 19+1⁄2 in) in diameter. [8]
Alder | The Wildlife Trusts
WebAlder. Scientific name: Alnus glutinosa. Common alder can be found along riversides, and in fens and wet woodlands. Its exposed roots provide shelter for fish, and its rounded leaves are food for aquatic insects. Species information. Category. Trees and shrubs. Statistics. Height: up to 20m. Conservation status. Common. When to see.
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