Alnus incana 'Aurea' – Golden alder

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Betulaceae

Alnus incana 'Aurea' – Golden alder

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Small tree with upright main branch creating a narrow ovate crown. Grows slower than the A. incana and forms a compact crown. The trunk is orange brown and the young twigs are strikingly yellow to orange, in winter also orange brown. In contrast to A. glutinosa, A. incana does not have sticky parts. The alternate leaves are ovoid and acuminate and have toothed margins. The underside is hairy to tomentose. The spring colour is strikingly yellow, in summer the leaf turns to light green. This tree is much more common than the A. glutinosa 'Aurea' that also has yellow leaves. The strobiles appear from September onwards and give the tree a decorative look all winter. The tree has a deep rooting main root, but remains more shallow than the A. glutinosa. Intolerant to hard surfaces.

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Specifications
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Height
5 - 10 m
Crown
ovate, half-open crown
Bark and branches
orange brown
Leaf
ovoid, light green, 4 - 8 cm
Flowers
catkins, ♂ orange, ♀ purplish, March/April
Fruits
ovate strobiles, grey brown
Spines/thorns
None
Toxicity
usually not toxic to people, (large) pets and livestock
Soil type
tolerant to dry soils, calcicole
Soil moisture
suitable for dry soil, withstand short flood, withstand long flood
Paving
tolerates no paving
Winter hardiness zone
2 (-45,5 to -40,1 °C)
Wind resistance
good, susceptible to sea wind
Other resistances
resistant to frost (WH 1 - 6), can withstand wind, resistant to de-icing salt
Application
tree containers, roof gardens, industrial areas
Shape
clearstem tree, multi-stem treem
Origin
Germany, 1892
Clear stem tree Multi-stem tree calcareous soil clay soil loamy soil sandy soil tolerates no paving light-loving resistant to de-icing salt resistant to frost (WH 1 - 6) suitable for dry soil withstand long flood withstand short flood can withstand wind ovoid/egg-shaped 2nd size, between 6 and 12 metres half-open crown yellow violet March average growing Conspicuous bloom non-toxic (usually) Ornamental fruit
Frequently asked questions
Alnus incana 'Aurea'

Alnus incana 'Aurea' can eventually reach a height of 5 - 10 m, depending on the site and climate conditions.

Alnus incana 'Aurea' is average growing and can eventually reach a height of 5 - 10 m, depending on the site and climate conditions.

The right time to plant Alnus incana 'Aurea' is during the dormancy period. In Western Europe, Alnus incana 'Aurea' with root balls can generally be planted from mid-November to late April, although this depends strongly on the climatic conditions and the species of tree.

Alnus incana 'Aurea' blooms in march.
General