Star Calendula (Calendula stellata)

Star Calendula

Calendula stellata

Star-shaped blooms glow like tiny suns in summer. Annual flowering herb; common name: star marigold.

Full sun
1–2/week
Beginner
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Plant Needs

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Sunlight Full sun exposure; tolerates partial shade but blooms best in direct sunlight
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Watering Water when top 2 cm of soil is dry; avoid overwatering to prevent root rot
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Temperature Thrives in temperate to warm conditions; avoid frost damage in late spring or early autumn
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Characteristics

  • Leaf: Oblong to spatulate, slightly hairy, pale green with serrated margins
  • Flower: Daisy-like composite heads with narrow, pointed ray florets forming a star shape; golden-yellow to orange
  • Stem: Slender, branching, slightly pubescent, upright growth habit
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Care Guide

Watering

Keep soil evenly moist during active growth

Fertilization

Apply diluted feed once every 2 weeks. Use balanced, diluted organic feed to support bloom production

Banana peel compost tea:Compost banana peels for 2–3 weeks, steep in water for 24 hours, dilute 1:20 for root drench; avoid raw peels to prevent pest issues
Pruning
  • Deadhead spent blooms regularly to encourage continuous flowering
  • Trim leggy stems to maintain compact growth habit
  • Remove yellowing foliage to improve airflow and reduce disease risk
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

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

Humans: Non-toxic to humans; edible petals may be used as culinary garnish

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Garden Uses & Culture

Culture: N/A

Usage: Ornamental garden plant; edible petals for culinary garnish