Spiderwisp (Cleome gynandra)

Spiderwisp

Cleome gynandra

Its delicate spider-like blooms add airy charm to gardens. Annual herbaceous edible plant; common names: spiderwisp, African cabbage.

Full sun
1–2/week
Beginner
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Plant Needs

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Sunlight Full sun to partial shade; tolerates hot, dry growing conditions with minimal stress
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Watering Water deeply when the top 2–3 cm of soil dries out; drought-tolerant once established
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Temperature Thrives in warm temperatures; sensitive to frost and damage below 10°C
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Characteristics

  • Leaf: Palmately compound leaves with 3–5 bright green, serrated leaflets
  • Flower: Clusters of white, pink, or pale purple spider-like blooms with long, prominent stamens
  • Stem: Erect, branching, slightly hairy stems with a faint pungent foliage scent
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Care Guide

Watering

Keep soil consistently moist during active growth; avoid waterlogging

Fertilization

Light monthly feeding with balanced diluted feed. Avoid over-fertilization to prevent excessive foliage growth at the expense of blooms

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 flowering
Pruning
  • Deadhead spent blooms regularly to extend the flowering period
  • Thin overcrowded stems to improve airflow and reduce disease risk
  • Cut back mature plants after flowering to collect seeds or encourage late-season regrowth
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: No known toxicity to cats

Humans: Edible leafy green with no known human toxicity when consumed as intended

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Garden Uses & Culture

Culture: N/A

Usage: Edible leafy green vegetable; ornamental garden border plant