Advanced Search Filters

Plant Type
Hardiness Zone
Heat Zone
Sunset Zone
Function
Sun Exposure
Soil Moisture
Water Requirement

SORBUS alnifolia

Image of Sorbus alnifolia

Russell Stafford

Family

Rosaceae

Botanical Name

SORBUS alnifolia

Plant Common Name

Alder-leaved Whitebeam, Korean Mountain Ash, Korean Whitebeam

General Description

Glossy, simple, Alnus-like leaves make this Asian native an unusual mountain ash species relative to most others which have pinnately compound leaves. Alder-leaved whitebeam is a small to medium-sized deciduous tree that originates from the slopes, mixed forests and thickets of China, Taiwan, Korea and Japan. It is a handsome landscape tree that maintains a pyramidal habit when young and rounded canopy when older. Like most ash trees, it offers multi-seasonal interest with attractive spring flowers, pleasing fall fruit and appealing stark winter bark. The red, berry-like pomes it produces are also edible and can be used to produce tasty jelly.

The deciduous, rich green leaves of alder-leaved whitebeam turn lovely shades of gold and orange in fall. Corymbs with 6 to 25 dusky white flowers are produced in spring. These develop into attractive, slightly oblong, berry-like pomes that turn shades of red in late-summer or fall. Birds relish the fruits. In winter, the lightly bumpy, greyish bark offers stark visual appeal.

Plant the European mountain ash in full sun to partial shade. It will tolerate a wide range of soil types with average to good drainage. It is quite cold tolerant but will not thrive where summers are hot and humid for extended periods of time. For best fall foliage color, water trees during substantial periods of summer drought. Plant in the landscape as a small shade tree or lawn specimen.

This is a markedly disease resistant whitebeam that will stand up to bacterial fireblight, cankers and borers better than most other cultivated species.

Characteristics

  • AHS Heat Zone

    10 - 1

  • USDA Hardiness Zone

    5 - 8

  • Sunset Zone

    A1, A2, A3, H1, H2, 1a, 1b, 2a, 2b, 3a, 3b, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24

  • Plant Type

    Perennial

  • Sun Exposure

    Full Sun, Partial Sun

  • Height

    40'-50' / 12.2m - 15.2m

  • Width

    25'-35' / 7.6m - 10.7m

  • Bloom Time

    Spring

  • Native To

    Eastern Asia, China, Japan, Korea

Growing Conditions

  • Soil pH

    Acidic, Neutral

  • Soil Drainage

    Average

  • Soil type

    Clay, Loam, Sand

  • Growth Rate

    Fast

  • Water Requirements

    Average Water

  • Habit

    Pyramidal

  • Seasonal Interest

    Spring, Fall, Winter

Ornamental Features

  • Flower Color

    Ivory

  • Fruit Color

    Red, Orange Red

  • Foliage Color (Spring)

    Green

  • Foliage Color (Summer)

    Green

  • Foliage Color (Fall)

    Orange, Gold

  • Bark Color

    Gray

  • Fragrant Flowers

    Yes

  • Fragrant Fruit

    Yes

  • Fragrant Foliage

    No

  • Bark or Stem Fragrant

    No

  • Flower Petal Number

    Single

  • Repeat Bloomer

    No

  • Showy Fruit

    Yes

  • Edible Fruit

    Yes

  • Showy Foliage

    Yes

  • Foliage Texture

    Medium

  • Foliage Sheen

    Glossy

  • Evergreen

    No

  • Showy Bark

    Yes

Special Characteristics

  • Bark Texture

    Smooth

  • Usage

    Feature Plant, Fruit / Fruit Tree, Shade Trees, Street Trees

  • Sharp or Has Thorns

    No

  • Invasive

    No

  • Attracts

    Birds

  • Self-Sowing

    Yes