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ARISAEMA thunbergii

Image of Arisaema thunbergii

Gerald L. Klingaman

Family

Araceae

Botanical Name

ARISAEMA thunbergii

Plant Common Name

Thunberg's Jack-in-the-pulpit, Urashima-so

General Description

Arisaema thunbergii is a tuberous herbaceous perennial native to Korea and Japan. In spring it bears a purple, white-striped spathe, from which protrudes a long, tail-like, S-shaped spadix. A large, compound, horseshoe-shaped leaf overtops the spathe and spadix. Bright orange berries ornament the spadix in fall.

Plant in moist, well drained soil and shade. It makes an excellent addition to the shade garden.

Characteristics

  • AHS Heat Zone

    9 - 5

  • USDA Hardiness Zone

    5 - 9

  • Plant Type

    Bulb or Corm or Tuber

  • Sun Exposure

    Partial Sun, Partial Shade, Full Shade

  • Height

    12"-24" / 30.5cm - 61.0cm

  • Width

    12"-24" / 30.5cm - 61.0cm

  • Bloom Time

    Spring

  • Native To

    Japan, Korea

Growing Conditions

  • Soil pH

    Acidic, Neutral

  • Soil Drainage

    Average

  • Soil type

    Loam

  • Growth Rate

    Medium

  • Water Requirements

    Average Water

  • Habit

    Upright/Erect

  • Seasonal Interest

    Spring, Summer, Fall

Ornamental Features

  • Flower Interest

    Showy

  • Flower Color

    White, Green, Purple

  • Flower Color Modifier

    Multi-Color

  • Fruit Color

    Green, Orange

  • Foliage Color (Spring)

    Green

  • Foliage Color (Summer)

    Green

  • Fragrant Flowers

    No

  • 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

    No

  • Foliage Texture

    Bold

  • Foliage Sheen

    Glossy

  • Evergreen

    Yes

  • Showy Bark

    No

Special Characteristics

  • Usage

    Container, Mixed Border, Wildflower

  • Sharp or Has Thorns

    No

  • Invasive

    No

  • Self-Sowing

    No