Crepe Ginger (Costus speciosus)

Crepe Ginger

Costus speciosus

A striking tropical perennial known for its spiraling stems and delicate, crepe-paper-like white flowers. Historically grouped with true gingers.

Prefers partial shade to filtered sunlight; can tolerate full sun if kept consistently moist.
2/week
Moderate
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Plant Needs

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Sunlight Prefers partial shade to filtered sunlight; can tolerate full sun if kept consistently moist.
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Watering Requires consistently moist soil during the growing season; do not let the root ball dry out completely.
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Temperature Thrives in warm, humid tropical conditions; frost-tender and will die back in freezing temperatures.
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Characteristics

  • Leaves: Spirally arranged around the stem, elliptic to lanceolate, dark green and smooth above, softly pubescent beneath;
  • Flowers: Large, white with a yellow center, emerging from dark red, cone-like terminal bracts; petals are thin and crinkled, resembling crepe paper;
  • Stems: Fleshy, reed-like, and distinctly spiraling, a key morphological trait separating Costaceae from Zingiberaceae;
  • Rhizomes: Thick, fleshy, and creeping, lacking the strong aromatic oils typical of true gingers.
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Care Guide

Watering

Keep soil consistently moist but not waterlogged.

Fertilization

Apply a balanced organic fertilizer to encourage foliage and stem growth.. Feed monthly during the active growing season; halt fertilization in winter.

Banana Peel Tea:Steep chopped banana peels in water for 24-48 hours, strain, and use the liquid to water the plant. This provides a gentle potassium boost to support rhizome health and vibrant blooming. Discard the solid peels in a compost bin to avoid attracting pests.
Pruning
  • Remove dead or damaged stems by cutting them all the way down to the soil line;
  • Prune away spent flower cones to maintain a tidy appearance and redirect energy to the rhizome;
  • Thin out older, crowded stems in early spring to improve air circulation.
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: Non-toxic per ASPCA guidelines for true gingers and spiral gingers.

Humans: Generally considered non-toxic; rhizomes are sometimes used in traditional practices.

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Garden Uses & Culture

Culture: In Western botanical conservatories and tropical landscaping, spiral gingers are highly prized for their architectural, twisting stems, bringing an exotic, structural element to shade gardens.

Usage: - Ornamental landscaping in tropical and subtropical gardens; - Feature plant in large indoor containers or heated greenhouses; - Cut flowers (the red bracts are long-lasting in floral arrangements).