How to Grow Jack-in-the-Pulpit
Jack-in-the-Pulpit
Arisaema triphyllum
flowerJack-in-the-Pulpit is a striking native woodland plant featuring a distinctive spadix (the "jack") enclosed within a spathe (the "pulpit"). The plant produces three-leaflet foliage and develops bright red berries in fall. It thrives in shaded, moist woodland environments.
Growing Conditions
Soil
Growing Zones
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Growth Stages
Dormancy
November-MarchPlant rests underground as a corm during winter months.
No active care needed; protect from extreme cold and wet conditions that may rot corms. Maintain consistent moisture in soil.
Emergence & Vegetative Growth
April-MayTwo or three large compound leaves unfold from the ground, forming umbrella-like canopy.
Provide consistent moisture and dappled shade. Mulch around base to retain moisture and regulate temperature. Monitor for slugs.
Flowering
May-JuneCentral inflorescence (spadix) emerges between leaf petioles, with striped spathe enclosing it. Flowers are small and clustered on the spadix.
Continue consistent moisture and shade. Plant is pollinated by small flies and gnats attracted to the flower's smell. No deadheading needed if berries desired.
Fruiting & Maturation
July-OctoberSpathe falls away; spadix develops bright red or orange berries that ripen in late summer/fall.
Allow berries to develop fully without disturbance. Maintain moisture. Do not remove foliage prematurely as it feeds the underground corm.
Senescence
October-NovemberFoliage yellows and dies back to the ground as temperatures cool.
Allow leaves to persist until fully brown and papery to maximize energy storage in corm. Apply light mulch layer for winter protection.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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and
Remove by hand, use copper barriers or slug baits, encourage natural predators like ground beetles
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Increase humidity, spray with neem oil, avoid overhead watering in dry conditions
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Ensure well-draining soil, avoid waterlogging, remove affected corms, sterilize tools, improve air circulation
Uses
Traditional herbal remedy
MedicinalHistorically used in Native American medicine for respiratory conditions and cough relief. The plant contains compounds with potential anti-inflammatory properties, though modern use is limited and raw tubers are toxic. [source]
Songbird and wildlife food source
WildlifeThe bright red berries attract and feed migratory songbirds, particularly thrushes, in fall. The plant supports small pollinators like gnats and flies. [source]
Ornamental woodland garden feature
HouseholdAdds visual interest and architectural form to shaded gardens with its distinctive striped spathe and dramatic foliage. The plant brings a naturalistic, forest-floor aesthetic to garden spaces. [source]
Historical food source (with caution)
CulinaryIndigenous peoples processed the corms through leaching to remove calcium oxalate crystals, making them edible. This requires extensive preparation and is not recommended for home growers due to toxicity risks of improper processing. [source]
Dried seed pod arrangements
CraftThe berries and dried seed pods can be incorporated into fall floral arrangements and crafts for dried naturalistic displays. [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
Collect ripe berries in fall (September-October) when fully red and slightly soft. Soak berries in water to remove pulp, then stratify seeds (cold, moist period) for 30 days before spring sowing. Seeds typically take 1-2 years to germinate and 2-3 additional years to reach flowering size.
Fun Facts
- 🌱 Jack-in-the-Pulpit can change its sex from year to year—young plants often produce male flowers, while larger, better-nourished plants produce female flowers (berries). This reproductive strategy maximizes energy investment based on plant vigor.
- 🌱 The common name perfectly describes the flower structure: the spadix is 'Jack' and the spathe is the 'pulpit.' The spathe often has white or purple stripes resembling a preacher's robes.
- 🌱 The plant attracts small flies and gnats with a putrid smell similar to decaying flesh, a pollination strategy called sapromyophily. This smell is strongest on warm afternoons.
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