American mountain ash Sorbus americana

American mountain ash


A fairly slow-growing tree with a rounded crown and light green leaves comprising up to 15 leaflets, turning red or yellow in autumn. In late spring and early summer produces dense, flattened clusters of small white flowers, followed by orange-red berries

Plant Info
Common Problems

About this plant

  • memoNames

    • Family


    • Synonyms

      American mountain ash roundwood

    • Common names

      Pyrus americanus

  • infoCharacteristics

    • Foliage type


    • Height

      8-12 metres

    • Spread

      4-8 metres

    • Hardiness zones


  • sunLight

    Full Sun, Partial Shade

  • scissorsPruning

    group 1

  • bambooSoil

    Loam, Sand, SoilClay

  • pinSuitable locations

    • Hardiness zone

      Low Maintenance City & Courtyard Gardens Cottage & Informal Garden Wildlife Gardens

  • sproutPropogation

    • Propagate by seed sown in containers in a cold frame in autumn or by taking semi-ripe cuttings in early summer

  • insectPests

    May be susceptible to aphids, blister mites, sawfly larvae and scale insects

  • microbeDiseases

    May be susceptible to a canker, fireblight, honey fungus and silver leaf