The Gardens | Woodland Garden

jack-in-the-pulpit

Arisaema triphyllum


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Family

Araceae

Description

Native species – Arisaema triphyllum

 

Jack-in-the-pulpit (Arisaema triphyllum) is a native woodland perennial known for its unusual floral structure: a hooded spathe (“pulpit”) wrapped around a vertical spadix (“jack”). Flowering in the early spring before the canopy fully leafs out, it blends easily into forest understories once in leaf. Plants are often unassuming when not in bloom, but in late summer, fertilized individuals produce clusters of bright red berries that add seasonal interest and support bird life.

 

Native to rich, deciduous woodlands across eastern North America, Arisaema triphyllum prefers moist, humus-rich soil and dappled shade. Individual plants can change sex depending on age and energy reserves, with larger, older plants more likely to produce female flowers. Although visually subtle, it plays a unique ecological role and naturalizes gently into undisturbed woodland settings.

Jack-in-the-Pulpit

 

Family: Araceae

Description: Native species – Arisaema triphyllum
A closely related species, Arisaema sikokianum (Japanese jack-in-the-pulpit), is also grown in the garden and is prized for its striking coloration—a deep purple spathe cupping a pure white spadix. Native to the woodlands of Shikoku, Japan, it prefers similar moist, shaded conditions but offers more dramatic visual contrast. Though slower to establish, it naturalizes modestly and shares the same fascinating reproductive strategy as its North American cousin.

Bloom Time

April to May

Range / Habitat

Eastern North America

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