Product description
Alnus Glutinosa ‘Imperialis’ more commonly known as the Cut Leaved Alder, really impresses with its picturesque, bamboo-like structure. From a distance, it is actually difficult to differentiate whether it is an alder or a bamboo. It is a medium-sized tree with slender, funnel-shaped upright central stems and bamboo-like arched branches. These trees are mainly used for planting on moist and wet sites, perfect solitaire for waterfront gardens or grass and bamboo compositions.
The Alder Imperialis produces very fine, deeply incised, long green leaves. These deciduous leaves alternate with 3 to 4 irregular, narrow lobes curving outward. The buds and young leaves of the tree feel sticky, hence the name glutinosa (sticky). The tree is blessed with both male and female flowers, the egg-shaped alder cones appear from September. It is strongly rooted and looks very decorative with drooping branches.
Like other Alnus, Imperialis can thrive in poorly-drained wet soils and is chosen for land reclamation due to its ability to balance nitrogenous content. However, it does prefer moist, nutrient-rich and weakly acidic soils. It does well in both sheltered and exposed locations.
This common Alder is undemanding, and it requires very low maintenance and pruning. You can praise it for its resistance to frost, salt and wind. However, it doesn’t tolerate paved ground, making it unsuitable alongside roads and avenues.
Alder Imperialis is suitable in parks, coastal areas, Japanese gardens, large gardens, etc. It grows sluggishly and it takes quite a long time before it looks like proper tree, but once it matures, this variety can give a bamboo and fern like appearance single-handedly.
Cut Leaf Alder Tree
Alnus 'Imperialis'
Alnus 'Imperialis'
Product description
Alnus Glutinosa ‘Imperialis’ more commonly known as the Cut Leaved Alder, really impresses with its picturesque, bamboo-like structure. From a distance, it is actually difficult to differentiate whether it is an alder or a bamboo. It is a medium-sized tree with slender, funnel-shaped upright central stems and bamboo-like arched branches. These trees are mainly used for planting on moist and wet sites, perfect solitaire for waterfront gardens or grass and bamboo compositions.
The Alder Imperialis produces very fine, deeply incised, long green leaves. These deciduous leaves alternate with 3 to 4 irregular, narrow lobes curving outward. The buds and young leaves of the tree feel sticky, hence the name glutinosa (sticky). The tree is blessed with both male and female flowers, the egg-shaped alder cones appear from September. It is strongly rooted and looks very decorative with drooping branches.
Like other Alnus, Imperialis can thrive in poorly-drained wet soils and is chosen for land reclamation due to its ability to balance nitrogenous content. However, it does prefer moist, nutrient-rich and weakly acidic soils. It does well in both sheltered and exposed locations.
This common Alder is undemanding, and it requires very low maintenance and pruning. You can praise it for its resistance to frost, salt and wind. However, it doesn’t tolerate paved ground, making it unsuitable alongside roads and avenues.
Alder Imperialis is suitable in parks, coastal areas, Japanese gardens, large gardens, etc. It grows sluggishly and it takes quite a long time before it looks like proper tree, but once it matures, this variety can give a bamboo and fern like appearance single-handedly.
Give your tree the best start
Plant specs, care guide & tips
Key features
Specifications
When to plant
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
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Planting and period of interest times are general guidelines and may vary based on your location and conditions. For best results, consult local gardening resources.
Instructions
Top Tip
Prune Alnus trees in late winter to remove damaged or crossing branches and encourage healthy growth. As nitrogen-fixing trees, they improve soil quality, making them excellent for planting in mixed woodland or as part of a shelterbelt. Consider incorporating them into areas prone to erosion, as their robust root systems stabilise the soil effectively. For best results, apply a slow-release fertiliser in spring to support new growth.
How to Water
Alnus trees thrive in moist conditions, so water thoroughly after planting and keep the soil consistently damp during the establishment period, particularly in dry weather. Mature trees are relatively low-maintenance and can handle occasional drought, but supplemental watering during prolonged dry spells will ensure steady growth. Avoid waterlogging the soil, especially for younger trees, as overly saturated conditions can hinder root development.
How to Plant
To plant an Alnus tree, select a sunny or partially shaded location with moist, well-draining soil. These trees tolerate a range of soil types, including poor or wet conditions, making them highly versatile. Dig a hole twice as wide and slightly deeper than the root ball, and soak the root ball before placing it in the hole. Backfill with the original soil, firm gently, and water well to settle the roots. Add a layer of mulch around the base, leaving space around the trunk to prevent rot.
