Arrowroot (Maranta arundinacea)

Arrowroot

Maranta arundinacea

Its starchy rhizones feed and soothe, a dual-purpose tropical beauty. Herbaceous perennial; common name: West Indian arrowroot.

Partial sun
1–2/week
Beginner
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Plant Needs

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Sunlight Bright indirect light; avoid direct midday sun which can scorch leaves
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Watering Water when top 2–3 cm of soil dries; avoid overwatering to prevent rhizome rot
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Temperature Thrives in 18–26°C; protect from temperatures below 12°C to prevent leaf damage
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Characteristics

  • Leaf: Oval, glossy green leaves with pale green veins; upright or slightly arching growth
  • Flower: Small, white or pale lavender tubular flowers in terminal clusters
  • Rhizome: Thick, fleshy underground rhizomes storing starchy reserves
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Care Guide

Watering

Keep soil consistently moist but not waterlogged

Fertilization

Diluted balanced feed every 2 weeks. Avoid over-fertilizing to prevent leaf burn; stop feeding in winter

Banana peel compost tea:Compost banana peels for 2–3 weeks; steep in water for 24 hours, dilute 1:20 for root drench to support rhizome growth
Pruning
  • Remove yellowing or damaged leaves to maintain plant health
  • Trim spent flower stems after blooming to redirect energy to rhizome growth
  • Divide overcrowded clumps in spring to propagate and refresh plants
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: Non-toxic; no adverse effects from ingestion or contact

Humans: No known toxic effects; rhizomes are edible when processed

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Garden Uses & Culture

Culture: N/A

Usage: Edible starchy rhizomes used as a gluten-free thickener; ornamental foliage plant