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Costus Genus

Spiral flag

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Costus | Copyright Greenplantswap 2018

General Needs

  • LightPart shade
  • HardinessFrost tender (min 5°C)
  • SoilWell drained, Fertile, Humus-rich
  • WaterMoist

Description

Costus genus (Spiral flag). They are mostly clump-forming rhizomatous evergreen perennial herbs. There are about 150 species that will grow mainly in the wet tropics. The leaves are spirally arranged on reed-like stems. The tubular decorative flower-heads will grow in terminal cones; they are highly attractive and excellent for arrangements or cut flowers.

Characteristics

Perennials, Evergreens, Herbaceous

Other common names

Spiral ginger

Origin

Africa, Asia, Australia and The Americas

Interest and use

Grown for its showy flowers.

Cultivation

They are frost tender, min 5C and will grow in a humid atmosphere out of the direct sunlight in a humus-rich soil. Grow in a humid atmosphere.

Propagation

You can propagate by division in the spring.

Pests, diseases or disorders

Pot grown plants may be attacked by red spider mites.

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