Manroot (Ipomoea pandurata)

Manroot

Ipomoea pandurata

Vines sprawl with heart-shaped leaves, bearing trumpeting white blooms. Perennial climbing vine; common names: Manroot, Wild Sweet Potato Vine.

Full sun
1–2/week
Moderate
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Plant Needs

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Sunlight Requires full sun to partial shade; at least 6 hours of direct sunlight daily to support optimal blooming
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Watering Water deeply when the top 2–3 cm of soil is dry; avoid overwatering to prevent tuber and root rot
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Temperature Thrives in 18–30°C; tolerates mild frost, with above-ground foliage dying back to the tuber in cold winters
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Characteristics

  • Leaf: Heart-shaped or fiddle-shaped (pandurate) glossy green leaves, 7–15 cm long with smooth margins
  • Flower: Fragrant white funnel-shaped blooms, 5–10 cm wide, opening in early morning and closing by midday
  • Root: Large, fleshy tuberous root system that stores water and nutrients for winter dormancy
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Care Guide

Watering

Keep soil consistently moist but not waterlogged to support active growth and blooming

Fertilization

Diluted balanced liquid fertilizer every 2 weeks. Avoid over-fertilizing, as excessive nitrogen can reduce blooming and promote foliage growth over flowers

Banana peel compost tea:Compost banana peels for 2–3 weeks, steep in water for 24 hours, dilute 1:20 with water, and apply as a root drench to avoid leaf burn
Pruning
  • Trim overgrown vines in early spring to encourage bushier growth and better flower production
  • Deadhead spent blooms regularly to promote continuous flowering throughout the growing season
  • Cut back dying foliage in late autumn to prepare the tuber for winter dormancy
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: Toxic; contains lysergic alkaloids that may cause vomiting, diarrhea, lethargy, and dilated pupils

Humans: Seeds contain lysergic alkaloids; ingestion may cause nausea, dizziness, and mild hallucinogenic effects

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Garden Uses & Culture

Culture: Seeds have been used in limited traditional medicinal practices by some Eastern Woodlands Indigenous peoples

Usage: Ornamental climbing vine for trellises and arbors; tuber has limited historical medicinal use