How to Grow Arrow Arum
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Arrow Arum
Peltandra virginica
flowerArrow arum is a native North American perennial aquatic or semi-aquatic plant characterized by arrow-shaped leaves and distinctive spathe flowers. It thrives in wet environments such as marshes, pond margins, and wetland areas, producing unique greenish-white flower spathes followed by ornamental berry clusters.
When should you plant Arrow Arum in your zone?
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Example Arrow Arum timeline · Pittsburgh, PA (Zone 6b)
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Plant Arrow Arum
Around Apr 17Near Pittsburgh's average last spring frost.
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Tend & protect
Late spring–summerWatering, feeding, and pest-watch reminders.
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First Arrow Arum blooms
Mid-to-late summerBefore the first fall frost (≈ Nov 8)
Sample dates for Pittsburgh, PA. Sign up to get exact Arrow Arum dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in zones 4-9, with preference for cooler to temperate climates
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Get my Arrow Arum timeline →Growth Stages
Establishment
4-6 weeksRhizomes settle and develop initial roots in wet substrate over first season
Keep consistently wet; minimize disturbance; ensure adequate hydration through seasonal changes
Vegetative Growth
Spring through early summer, 12-18 monthsArrow-shaped leaves emerge from rhizomes and expand, creating dense foliage clusters
Maintain wet conditions; allow multiple growing seasons for strong plant development; remove any competing vegetation
Flowering
3-4 weeks, typically late spring to early summerDistinctive greenish-white spathe flowers with projecting spadix emerge from leaf bases
Maintain optimal wetness; avoid disturbance during bloom; flowers attract pollinators including flies and beetles
Fruiting
6-8 weeks, through mid to late summerFlowers develop into clusters of ornamental red to burgundy berries held above water
Leave berries in place for wildlife food and natural seed dispersal; maintain water levels
Dormancy
Fall through early spring, 4-5 monthsFoliage dies back as temperatures cool; rhizomes persist underground through winter
Allow natural senescence; maintain minimum water depth to protect rhizomes from freezing; do not prune dead material until spring
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Inspect leaves regularly; hand-pick beetles or floating debris where they hide; maintain water quality; natural predators control most populations
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Remove by hand; maintain adequate water depth to protect emerging leaves; encourage natural predators like dragonfly nymphs
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Install protective netting if grazing pressure is severe; natural populations typically coexist with waterfowl; fencing around sensitive areas
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Ensure water is not stagnant; maintain water circulation or aeration; use well-draining organic substrate; avoid anaerobic conditions
Uses
Wildlife Food and Habitat
WildlifeArrow arum berries provide important fall and early winter food for waterfowl, songbirds, and small mammals. The dense foliage creates valuable habitat for amphibians, fish, and invertebrates in wetland ecosystems. [source]
Pond and Water Garden Ornament
HouseholdThe distinctive arrow-shaped leaves and striking greenish-white flower spathes make arrow arum an attractive addition to ornamental water gardens, pond margins, and constructed wetlands. The red berries provide late-season visual interest. [source]
Native Plant Restoration
CraftArrow arum is valuable in ecological restoration projects for wetlands, rain gardens, and native plant landscapes throughout eastern North America. Its role in native wetland communities makes it important for biodiversity and ecosystem function. [source]
Traditional Ethnobotanical Use
MedicinalNative American cultures historically used arrow arum rhizomes after careful processing to remove calcium oxalate crystals, though this is not commonly practiced today. Modern medicinal applications are minimal due to toxicity of raw plant material. [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
Arrow arum is not typically harvested for culinary use. For ornamental/seed purposes: Collect ripened berries in late summer when fully red and easily detached; separate seeds from berry pulp and allow to dry. Rhizomes can be carefully divided in early spring or fall after plant is well-established (at least 3 years old) during dormancy.
Fun Facts
- 🌱 Arrow arum derives its name from the distinctive arrow or spade-shaped leaves, which can grow up to 12 inches long
- 🌱 The spathe flower produces heat (thermogenesis) that attracts fly pollinators, particularly fungus gnats and flies that mistake the flower for decaying material
- 🌱 Arrow arum rhizomes contain calcium oxalate crystals that cause burning sensations if ingested raw, earning it the alternative name 'tuckahoe' from Powhatan peoples who developed elaborate processing techniques to make the starchy tubers edible
Gardening Terms
New to gardening? Learn about terms used in this guide:
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