Star-of-Bethlehem (Ornithogalum umbellatum)

Star-of-Bethlehem

Ornithogalum umbellatum

Delicate star-shaped blooms glow like scattered stardust in spring. Bulbous perennial flowering plant; common name: grass lily.

Full sun
1–2/week
Beginner
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Plant Needs

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Sunlight Full sun to partial shade; thrives in bright, direct sunlight during cool spring months and tolerates light shade in warmer climates
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Watering Water regularly during active spring growth; reduce watering after flowering when foliage begins to yellow and die back
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Temperature Hardy to -15°C; enters dormancy during summer heat and winter cold to survive extreme temperatures
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Characteristics

  • Leaf: Narrow, linear, grass-like leaves with a central white stripe; emerge in early spring
  • Flower: Clustered umbels of 10–20 white, star-shaped blooms with green stripes on the reverse of petals
  • Bulb: Small, ovoid, white bulbs that spread via underground offsets
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Care Guide

Watering

Keep soil evenly moist during active spring growth; avoid overwatering to prevent bulb rot

Fertilization

Apply diluted balanced fertilizer once at the start of active growth. Use a low-nitrogen fertilizer to prioritize bulb and flower development over foliage growth

Eggshell powder top-dressing:Crush clean, fully dried eggshells into a fine powder; sprinkle lightly on the soil surface in early spring before new growth emerges
Pruning
  • Remove spent flower stalks immediately after blooming to redirect energy to bulb growth
  • Trim yellowing foliage once it has completely died back in late spring to maintain garden tidiness
  • Thin overcrowded bulbs every 2–3 years in early fall to improve airflow and reduce competition for nutrients
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: Toxic; ingestion can cause vomiting, diarrhea, lethargy, and abnormal heart rate

Humans: Contains cardiac glycosides; ingestion of large quantities may cause mild gastrointestinal upset including nausea and vomiting

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Garden Uses & Culture

Culture: Associated with the biblical Star of Bethlehem; symbolizes hope, purity, and new beginnings

Usage: Ornamental garden plant; occasionally used as a cut flower for small floral arrangements