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BERBERIS x gladwynensis 'William Penn'

Image of Berberis x gladwynensis 'William Penn'

James H. Schutte

Family

Berberidaceae

Botanical Name

BERBERIS x gladwynensis 'William Penn'

Plant Common Name

Gladwyn Barberry, William Penn Barberry

General Description

This popular cultivar has a mounded to spreading habit and deep green foliage that turns bronze hues in winter.

Gladwyn's barberry is a beautiful, but thorny, evergreen that is a hybrid cross between Berberis verruculosa and Berberis gagnepainii. It is grown for its glossy, spiny, evergreen leaves that turn bronze in winter. This medium sized shrub is also graced with showy yellow flowers in mid to late spring. The flowers are followed by small blue-black fruits that offer little visual appeal but are attractive to birds.

If provided with full to partial sun and well-drained average soil, 'William Penn' will thrive. It is best used as an edging shrub, in foundation plantings or mixed borders. Avoid planting this sharp, thorny plant near children's play areas.

Characteristics

  • AHS Heat Zone

    9 - 4

  • USDA Hardiness Zone

    6 - 9

  • Sunset Zone

    4, 5, 6, 7, 8, 9, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24

  • Plant Type

    Shrub

  • Sun Exposure

    Full Sun, Partial Sun

  • Bloom Time

    Early Spring, Spring, Late Spring

  • Native To

    Hybrid Origin

Growing Conditions

  • Soil pH

    Acidic, Neutral

  • Soil Drainage

    Well Drained

  • Soil type

    Clay, Loam

  • Tolerances

    Pollution, Drought

  • Growth Rate

    Medium

  • Habit

    Cushion/Mound-forming

  • Seasonal Interest

    Spring, Summer, Fall, Winter

Ornamental Features

  • Flower Interest

    Showy

  • Flower Color

    Yellow, Gold

  • Fruit Color

    Purple, Plum

  • Foliage Color (Spring)

    Dark Green

  • Foliage Color (Summer)

    Dark Green

  • Foliage Color (Fall)

    Bronze

  • Bark Color

    Yellow, Brown

  • Fragrant Flowers

    Yes

  • Fragrant Fruit

    No

  • Fragrant Foliage

    No

  • Bark or Stem Fragrant

    No

  • Flower Petal Number

    Single

  • Repeat Bloomer

    No

  • Showy Fruit

    Yes

  • Edible Fruit

    No

  • Showy Foliage

    Yes

  • Foliage Texture

    Medium

  • Foliage Sheen

    Glossy

  • Evergreen

    No

  • Showy Bark

    No

Special Characteristics

  • Bark Texture

    Smooth

  • Usage

    Edging, Feature Plant, Foundation, Hedges, Mixed Border

  • Sharp or Has Thorns

    Yes

  • Invasive

    No

  • Self-Sowing

    No