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ALNUS aka Alder is a tree or large shrub that will enrich soil – when the leaves fall, and through their root systems, alders add nitrogen and other nutrients directly into the soil, making them an important to the ecosystem.

Alders have a distinctive rich glossy green leaf that is veined and softly serrated. The Alder flowers (catkins) arrive in the spring before the plants leaf up, and although a deciduous tree, the leaves of most of this species, remain on the tree for a long time.
Alders will tolerate most conditions, including sea air and swampy conditions, and with their fast-growing habit they’re a perfect tree for wind breaks, privacy and shelter.

Extremely tolerant, fast growing tree that loves moisture. Attractive heart shaped leaves (hence the name Cordata) that are green and glossy. The male flower catkins appear before the leaves and the female flowers develop into small woody cones. Deciduous.

 

A fabulous quick growing specimen or shelter tree that tolerates poor soil and wet and boggy conditions. Attractive catkin flowers in late winter followed by dark green coarse, rounded foliage. The dry timber makes excellent fire wood. Prefers a sunny spot. Deciduous.

This is a historic and useful tree that man has utilized for many purposes including the timber piles that hold up Venice and the manufacture of wooden Clogs.

 

The Mexican Alder is a quick growing evergreen or semi evergreen (in cold climates) tree with attractive serrated green leaves, grey bark and catkins. Perfect for wind-breaks, privacy or shelter. Easy to grow, trims well, timber can be used for fire-wood. Prefers sun and adequate moisture. Evergreen.

 

Alders, thrive in areas and soils in which other plants barely survive. Their roots fix nitrogen which will eventually increase the nutrients available for other plants which follow. Does well in full sun to part shade in dry to somewhat wet soils. Deciduous.