Sorbus americana – American mountain ash

View prices and availability
  2. trees
  3. Sorbus americana
Rosaceae

Sorbus americana – American mountain ash

View prices and availability
In its natural habitat in the northeast of North America this species grows to become a small to medium-sized tree. It is a slow grower with a light-grey trunk and glossy reddish-brown twigs. This gives the tree a remarkable appearance in the winter. The imparipinnate leaves consist of 13 - 17 lanceolate leaflets that turn golden yellow in the autumn. The leaf edge is usually sharply serrated. The flowers are in umbels with a diameter of approx. 16 cm. The separate flowers are 0.5 – 0.7 cm in size and white. Orange-red berries follow in the autumn. S. americana closely resembles S. aucuparia but is distinguished by the reddish-brown twigs and the somewhat narrower dark green leaves.

This product is currently not available.
You can submit your request by the contact form. We will inform you without obligation about the possibilities.

Specifications
Download PDF
Height
10 - 12 m
Crown
ovoid to round, half-open crown
Bark and branches
bark grey, twigs glossy reddish-brown
Leaf
imparipinnate, approx. 25 cm, 13 - 17 leaf segments, green, feathered leaf
Autumn colour
yellow, orange
Flowers
in umbels, Ø approx. 16 cm, white, May/June
Fruits
orange-red, Ø 0.6 – 0.9 cm, very abundant
Spines/thorns
None
Toxicity
usually not toxic to people, (large) pets and livestock
Soil type
peaty soil, does not stand up to heavy clay or wet soils
Paving
tolerates partial paving
Winter hardiness zone
3 (-40,0 to -24,5 °C)
Wind resistance
moderate
Other resistances
resistant to frost (WH 1 - 6)
Fauna tree
valuable for bees (honey plant), provides food for birds
Application
avenues and broad streets, squares, cemeteries, large gardens
Shape
clearstem tree
Origin
the northeast of North America
Clear stem tree acid soil calcareous soil loamy soil peaty soil sandy soil tolerates partial paving resistant to frost (WH 1 - 6) ovoid/egg-shaped 2nd size, between 6 and 12 metres half-open crown green white May early sprout average growing Conspicuous bloom Feathered leaf Attractive autumn colour valuable for bees (honey plant) provides food for birds non-toxic (usually) Ornamental fruit
Possibly of interest
Carpinus betulus – Hornbeam, Common hornbeam
Carpinus betulus
Hornbeam, Common hornbeam
More information
Fagus sylvatica – Common beech, European beech
Fagus sylvatica
Common beech, European beech
More information
Malus 'Red Sentinel' – Flowering Crab
Malus 'Red Sentinel'
Flowering Crab
More information
Parrotia persica – Persian ironwood
Parrotia persica
Persian ironwood
More information
Frequently asked questions
Sorbus americana

Sorbus americana can eventually reach a height of 10 - 12 m, depending on the site and climate conditions.

Sorbus americana is average growing and can eventually reach a height of 10 - 12 m, depending on the site and climate conditions.

The leaves of Sorbus americana turn yellow, orange in autumn.

The right time to plant Sorbus americana is during the dormancy period. In Western Europe, Sorbus americana 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.

Sorbus americana blooms in may.
General