How to Grow Arrowhead

Arrowhead

Sagittaria latifolia

vegetable

Arrowhead is an aquatic or semi-aquatic plant native to North America, prized for its starchy tubers that grow underground in muddy water. The plant produces distinctive arrow-shaped leaves above water and small white flowers. Both the tubers and leaves are edible and have been cultivated for centuries, particularly in Asian cuisines.

Growing Conditions

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Sun: Full sun to partial shade, 4-6 hours of direct sunlight daily

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Water: Requires standing water 6-12 inches deep; grown in ponds, shallow water gardens, or wet soil. Keep soil consistently waterlogged.

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Spacing: 18-24 inches

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Days to maturity: 90-120 days for tuber development

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Planting depth: Tubers planted 2-3 inches deep in mud; seeds sown on wet soil surface

Soil

Type: Muddy or silty soil with high organic matter, submerged or in shallow water

pH: 6.0-7.5

Amendments:

Peat moss Compost Aged manure Water garden soil

Growing Zones

Find your zone →

Thrives in zones 3-10, with best performance in zones 5-8

3a 3b 4a 4b 5a 5b 6a 6b 7a 7b 8a 8b 9a 9b 10a

Growth Stages

Planting & Emergence

2-3 weeks

Tubers are planted in muddy substrate or seeds are sown on wet soil. Initial shoots emerge from tubers.

Ensure consistent water level above soil. Keep water temperature above 60°F for best sprouting. Remove debris from planting area.

Vegetative Growth

4-6 weeks

Arrow-shaped leaves emerge above the water surface on long petioles. Plant develops an established root system and additional tubers form underground.

Maintain consistent water level. Remove any dead or damaged leaves. Monitor for pests. Thin crowded plantings if necessary.

Flowering

3-4 weeks

Small white flowers with yellow centers appear on tall flower spikes above the water surface, typically in summer.

Continue maintaining water level. Flowers attract pollinators. Remove spent flower heads if desired to redirect energy to tuber production.

Tuber Development & Maturation

4-6 weeks

Underground tubers enlarge and develop starch reserves. Plants may show some leaf yellowing as energy is directed belowground.

Maintain stable water levels. Avoid disturbing soil. Do not harvest immature tubers. Monitor for late-season pests.

Dormancy & Harvest

Variable; harvest occurs in fall or early winter

Leaves die back in fall or winter as the plant goes dormant. Tubers are ready for harvest when foliage begins to decline.

Harvest tubers carefully by draining water and gently excavating muddy substrate. Store tubers in cool, moist conditions or leave in water for winter.

Companion Planting

Plan your garden →

Plant with:

Pickerel rush Water lily Cattail Lotus Watercress Iris

Avoid planting near:

Aggressive spreading water plants Dense floating plants that block light

Common Pests

Remove affected leaves; introduce aquatic predatory beetles; maintain water quality
Hand-pick affected leaves; maintain good water circulation; avoid overcrowding plants
and
Remove debris; introduce natural predators like ducks; create barriers with copper tape
Improve water circulation and aeration; remove dead plant material; ensure adequate light

Uses

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Nutritious tubers for Asian cooking

Culinary

Arrowhead tubers are staple ingredients in Asian cuisines, particularly Chinese cooking, prepared by boiling, stir-frying, or adding to soups. They have a mild, slightly sweet flavor and a texture similar to water chestnuts. [source]

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Fresh leafy greens

Culinary

Young arrowhead leaves can be harvested and cooked like spinach or added to stir-fries and soups. They are tender and mildly flavored. [source]

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Traditional Chinese medicine

Medicinal

Arrowhead tubers have been used in traditional Chinese medicine to support digestive health and reduce inflammation. The plant is valued for its diuretic properties. [source]

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Waterfowl and aquatic habitat

Wildlife

Arrowhead provides food and nesting habitat for ducks, geese, and other wetland birds. The tubers are particularly valued by waterfowl. [source]

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Water garden ornamental

Household

Beyond edibility, arrowhead is grown for its attractive arrow-shaped foliage and white flowers, making it a popular addition to ornamental water gardens and ponds. [source]

This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.

Harvest Tips

Harvest tubers in fall after foliage dies back (September-November in most regions). Carefully drain water and dig through muddy substrate to locate egg-shaped tubers. Handle gently to avoid damage. Clean tubers and store in cool, moist conditions at 32-50°F, or keep submerged in water. Young arrowhead leaves can be harvested in spring and summer for cooking.

Fun Facts

🌱 Arrowhead tubers have been a staple food for Native Americans for thousands of years and were a major food source for early settlers.
🌱 The plant's distinctive arrow-shaped leaves give it its common name; the scientific name 'Sagittaria' comes from the Latin word for arrow.
🌱 A single arrowhead plant can produce dozens of tubers, making it highly productive in ideal conditions; some tubers are the size and shape of small potatoes.

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