Grey Star Calathea (Calathea setosa 'Grey Star')

Grey Star Calathea

Calathea setosa 'Grey Star'

Its silver-grey foliage shimmers like stardust, a soft, calming indoor accent. Evergreen herbaceous perennial; common name: Grey Star Calathea.

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 the delicate variegated foliage
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Watering Water when the top 2–3 cm of soil feels dry; avoid overwatering to prevent root rot
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Temperature Thrives in consistent warm temperatures; avoid cold drafts below 12°C which can cause leaf browning
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Characteristics

  • Leaf: Oval elongated leaves with silvery-grey variegation along primary veins, deep green undersides; foliage folds vertically at night (nyctinasty)
  • Stem: Short, upright green stems forming tight, compact clumps
  • Flower: Small, pale purple or white bracted flowers (rarely produced in indoor cultivation)
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Care Guide

Watering

Keep soil evenly moist but not waterlogged; mist foliage weekly to boost humidity

Fertilization

Diluted balanced liquid feed every 4 weeks. Avoid over-fertilizing, as this can cause leaf tip burn

Banana peel compost tea:Use fully composted banana peels; dilute 1:20 with water for root drenching to avoid attracting pests or causing soil imbalance
Pruning
  • Trim yellowing or damaged leaves at the base with sterile scissors to maintain clump appearance and health
  • Remove brown leaf edges carefully to preserve the plant’s aesthetic
  • Divide overcrowded clumps during spring repotting to promote new growth and reduce competition for resources
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: Non-toxic; no adverse effects for cats if ingested

Humans: No known toxic effects to humans; safe for handling and accidental ingestion of small amounts

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Garden Uses & Culture

Culture: Symbolizes calm and tranquility; popular in biophilic indoor design for its soothing foliage texture

Usage: Indoor ornamental foliage plant; ideal for low-light office or home spaces