Star Hawkbit (Rhagadiolus stellatus)

Star Hawkbit

Rhagadiolus stellatus

Dainty star-shaped blooms dot dry grasslands, a subtle wildflower charm. Annual herbaceous wildflower; common name: Star Hawkbit.

Full sun
1/week
Beginner
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Plant Needs

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Sunlight Requires full sun for optimal flowering; tolerates partial shade in extreme heat
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Watering Drought-tolerant; water only during prolonged dry spells to avoid root rot
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Temperature Thrives in warm temperate to Mediterranean climates; tolerates light frost down to 5°C
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Characteristics

  • Leaf: Basal rosette of linear to spatulate leaves with finely toothed margins.
  • Flower: Yellow composite heads with star-shaped ray florets, 1–2 cm in diameter.
  • Stem: Slender, branching stems with sparse, small bracts.
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Care Guide

Watering

Water sparingly when top 2–3 cm of soil is completely dry

Fertilization

Optional diluted compost tea once monthly. No regular fertilization is required for established wild populations

Composted eggshell powder:Sprinkle a thin layer around the base of seedlings; avoid direct contact with foliage to prevent burning
Pruning
  • Deadhead spent flower heads to encourage extended blooming through early summer
  • Clear dead foliage after the plant dies back in late summer to reduce pest habitat
  • Thin overcrowded seedlings to 5–10 cm spacing for improved airflow and growth
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: No listed toxicity to cats

Humans: No known toxic effects on humans

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Garden Uses & Culture

Culture: N/A

Usage: Ornamental wildflower for rock gardens and meadows; provides forage for native pollinators