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Selection based on Spring inventory levels and may no longer be a true representation.

Feel free to call us at 905-945-2219 for confirmation or special order. 


Imperial Common Alder*

Alnus glutinosa 'Imperialis'

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Imperial Common Alder (Alnus glutinosa 'Imperialis') at Cole's Florist & Garden Centre

Imperial Common Alder

Imperial Common Alder

(Photo courtesy of NetPS Plant Finder)

Imperial Common Alder (Alnus glutinosa 'Imperialis') at Cole's Florist & Garden Centre

Imperial Common Alder foliage

Imperial Common Alder foliage

(Photo courtesy of NetPS Plant Finder)

* This is a "special order" plant - contact store for details

Height:  50 feet

Spread:  30 feet

Sunlight:  full sun  partial shade 

Hardiness Zone:  4a

Other Names:  Black Alder, European Alder


A very special tree valued for its finely cut leaves, giving almost a ferny appearance; a great accent tree for small properties to offset coarse foliage plants

Ornamental Features

Imperial Common Alder has green foliage throughout the season. The deeply cut ferny leaves do not develop any appreciable fall colour. Neither the flowers nor the fruit are ornamentally significant.

Landscape Attributes

Imperial Common Alder is an open deciduous tree with a shapely oval form. It lends an extremely fine and delicate texture to the landscape composition which can make it a great accent feature on this basis alone.

This is a relatively low maintenance tree, and is best pruned in late winter once the threat of extreme cold has passed. It has no significant negative characteristics.

Imperial Common Alder is recommended for the following landscape applications;

  • Accent

Planting & Growing

Imperial Common Alder will grow to be about 50 feet tall at maturity, with a spread of 30 feet. It has a low canopy with a typical clearance of 4 feet from the ground, and should not be planted underneath power lines. It grows at a fast rate, and under ideal conditions can be expected to live for 50 years or more.

This tree does best in full sun to partial shade. It is quite adaptable, prefering to grow in average to wet conditions, and will even tolerate some standing water. It is not particular as to soil type or pH. It is somewhat tolerant of urban pollution. Consider applying a thick mulch around the root zone in winter to protect it in exposed locations or colder microclimates. This is a selected variety of a species not originally from North America.


* This is a "special order" plant - contact store for details

Hardiness Zone Plant Height Minimum Sunlight
Ornamental Features