Black Alder Tree

Black Alder Tree


As a member of the birch family, black alder trees are fast-growing European native landscaping trees which can be found all around the world. They are not big-sized trees and most of the can grow up to 50 feet in height. Like their other relatives in alder family, they are able to convert the nitrogen in the air into the soil as well, making them reproduce quickly in areas suffered from natural disasters like forest fires etc. The prefer to grow in moist environment with full sunlight. Although they can tolerate most soil types, they cannot survive in drought areas and partial shades.


One of the important functions of planting black alder trees in garden is to block winds. They have large green leaves with serrated edges and broad leaflets. They are deciduous trees so that all leaves will shed off in autumn. They will produce attractive flowers in spring and they will be pollinated by winds or insects. Their seeds will hide in cones with are generated at the end of small branches. They also have some seedless cones which are usually for decoration purposes.

They are very easy to establish themselves in an area with adequate moisture and sunlight. Their roots are able to stay in soggy areas for a long time without damages. They prefer slightly acidic soil conditions and cannot survive in alkaline soil types. Drought soil will seriously weaken the health of the trees and you should avoid planting if there are no adequate water for them in your garden.

Attribute
Image provided By Bruce Marlin [CC-BY-SA-3.0 (http://creativecommons.org/licenses/by-sa/3.0)], via Wikimedia Commons

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