Advanced Search Filters

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

PHELLODENDRON amurense

Image of Phellodendron amurense

TL

Family

Rutaceae

Botanical Name

PHELLODENDRON amurense

Plant Common Name

Amur Corktree

Special Notice

This entry has yet to be reviewed and approved by L2G editors.

General Description

Touted for its cold hardiness and tolerances of air pollution and drought, Amur corktree also possesses multiple ornamental features. A wide-spreading, open-branched deciduous tree, it hails from northeastern China, Korea, Japan and extreme eastern Russia. A fat, short trunk branches out into muscular, irregular boughs. The soft, corky bark mimics the look of a coarse, tan snake skin, begging to be touched.

Amur corktree is dioecious, displaying tiny, yellow-green, male or female flowers on separate plants. Only female trees produce the rounded black fruits in tip clusters. Birds eat these aromatic fruits. In many temperate climates, the proliferation of weedy seedlings causes this tree to be considered invasive and problematic. The compound leaves are glossy dark green, each comprising seven to 13 pointed oval leaflets. Autumn foliage is inconsistent, usually yellow-green, and leaves quickly fall from the branches. Occasionally a branch displays more intense yellow leaves, and in some climates this tree's fall display is no less than breaktaking.

Grow Amur corktree in a spacious landscape that allows the wide-spreading boughs and umbrella-like canopy to fully develop. Full to partial sun is needed. The best growth occurs in moist, non-alkaline soils with good drainage, but the tree is widely tolerant of many soils. Long-term environmental stresses causes the tree to not look or perform its best, but it does manage to survive.

Male cultivar 'RNI 4551', better known as Shademaster®, develops a more upright, rounded growth habit for use near boulevards. Other male selections that do not shed fruits and seeds into the landscape include 'His Majesty' and 'Macho'.

Characteristics

  • AHS Heat Zone

    8 - 1

  • USDA Hardiness Zone

    3 - 7

  • Sunset Zone

    A3, 1b, 2a, 2b, 3a, 3b, 4, 5, 6, 7, 8, 9, 10, 14, 15, 16, 17, 18, 19

  • Plant Type

    Tree

  • Sun Exposure

    Full Sun, Partial Sun

  • Height

    30'-45' / 9.1m - 13.7m

  • Width

    35'-45' / 10.7m - 13.7m

  • Bloom Time

    Late Spring

  • Native To

    China, Japan, Korea

Growing Conditions

  • Soil pH

    Acidic, Neutral

  • Soil Drainage

    Well Drained

  • Soil type

    Clay, Loam, Sand

  • Tolerances

    Pollution, Drought

  • Growth Rate

    Fast

  • Water Requirements

    Drought Tolerant, Average Water

  • Habit

    Spreading

  • Seasonal Interest

    Spring, Summer, Fall, Winter

Ornamental Features

  • Flower Interest

    Insignificant

  • Flower Color

    Yellow Green

  • Fruit Color

    Black

  • Foliage Color (Spring)

    Green

  • Foliage Color (Summer)

    Green, Dark Green

  • Foliage Color (Fall)

    Yellow, Yellow Green

  • Foliage Color (Fall) Modifier

    Spotted/Mottled

  • Bark Color

    Tan

  • Fragrant Flowers

    No

  • Fragrant Fruit

    Yes

  • Fragrant Foliage

    Yes

  • Bark or Stem Fragrant

    No

  • Repeat Bloomer

    No

  • Showy Fruit

    Yes

  • Edible Fruit

    No

  • Showy Foliage

    Yes

  • Foliage Texture

    Fine

  • Foliage Sheen

    Glossy

  • Evergreen

    No

  • Showy Bark

    Yes

Special Characteristics

  • Bark Texture

    Corky

  • Usage

    Shade Trees, Street Trees

  • Sharp or Has Thorns

    No

  • Invasive

    Sometimes

  • Attracts

    Birds

  • Self-Sowing

    Yes