Arisaema ‘Triphyllum’ 'Triphyllum' (Arisaema)

Jack-in-the-Pulpit (Arisaema triphyllum) is a fascinating woodland perennial prized for its distinctive hood-shaped green flower striped with purple, surrounding a dark central spadix. Blooming from April to May, it brings a mysterious, sculptural presence to shaded gardens, while its rich green trifoliate foliage adds texture and elegance to woodland settings. Growing 30 to 45 cm (12 to 18 in) tall, it blends naturally into shade gardens and, on female plants, may produce clusters of bright red ornamental berries in autumn. Hardy to Zone 4, this native woodland species thrives in the cool, humus-rich soils of Quebec gardens.

Plant the bulbs in spring or early fall at a depth of 8 to 10 cm (3 to 4 in), spacing them 20 to 25 cm (8 to 10 in) apart. Jack-in-the-Pulpit prefers bright shade or partial shade and rich, humus-filled, consistently moist, well-drained soil with a slightly acidic to neutral pH. Keep the soil evenly moist throughout the growing season, especially during dry periods, without allowing it to become waterlogged. A generous application of well-rotted compost in spring or a layer of fallen leaves in autumn helps maintain vigorous growth. Avoid disturbing established bulbs, as the plant develops slowly and performs best when left undisturbed for many years.

Ideal for natural woodland gardens, shaded borders, woodland rock gardens, and collector plantings, this unique perennial creates a striking focal point in shaded landscapes. It pairs beautifully with ferns, hostas, trilliums, bloodroot, and foamflowers (Tiarella), all of which thrive under similar cool, woodland conditions. Its unusual flowers attract specialized pollinating insects, while the bright red berries extend ornamental interest into autumn. A mulch of shredded leaves helps conserve soil moisture while recreating the rich forest floor this species naturally prefers. This plant is grown exclusively for its ornamental value and is not intended for consumption.