With a few exceptions, alders are deciduous, and the leaves are alternate, simple, and serrated. The flowers are catkins with elongate male catkins on the same plant as shorter female …

Alder, 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 …

Jul 25, 2024 · Alder trees (Alnus spp.) include 30 species of trees in the birch family. Learn their main characteristics, growing tips, and how to identify them.

Nov 16, 2022 · 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 …

Oct 23, 2024 · Depending on the species, they can grow from small, multi-stemmed shrubs to tall trees up to 35 meters in height. The leaves of alder trees are usually simple, alternate, and …

Mar 30, 2024 · Alder trees are deciduous, meaning they lose their leaves in the fall. They are typically medium to large-sized trees, reaching heights of 50 to 80 feet. The leaves of alder …

Alder trees are closely related to birch trees, as they both belong to the same scientific family. There are several dozen species of alder trees, all belonging to the Alnus genus. Alder trees …

Dec 29, 2024 · There are two main types of alder trees: red alder (Alnus rubra) and black alder (Alnus glutinosa). Red alder trees are primarily found in North America, particularly in the …

Alder wood is sometimes used for marine piles and supports. Most notably, European alder (Alnus glutinosa) has been used in submerged applications throughout the city of Venice, Italy.

Feb 10, 2025 · Explore the unique characteristics, types, and historical significance of Alder trees. Learn essential care tips, uses, and interesting facts about these remarkable trees.