Siberian Squill (Scilla siberica)

Siberian Squill

Scilla siberica

Bright blue star flowers herald early spring, a cheerful low-growing bulb. Early spring flowering bulb; common name: Siberian squill.

Full sun
1–2/week
Beginner
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Plant Needs

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Sunlight Thrives in full sun to partial shade; adequate light promotes abundant spring flowering
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Watering Keep soil evenly moist during active spring growth; reduce watering significantly after foliage dies back in summer
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Temperature Extremely cold hardy, tolerates subzero winter temperatures; avoid prolonged exposure to heat above 25°C during dormancy
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Characteristics

  • Leaf: Basal linear dark green leaves, 10–15 cm long, emerging before flowers
  • Flower: Star-shaped bright blue flowers in loose racemes, 1–2 cm in diameter
  • Bulb: Small ovoid underground storage bulb, 1–2 cm wide
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Care Guide

Watering

Maintain consistent soil moisture during active growth period to support flowering

Fertilization

Apply diluted balanced fertilizer once when shoots first emerge. Use a low-nitrogen fertilizer to avoid excessive foliage growth

Composted banana peel tea:Steep 2–3 fully composted banana peels in 1L water for 24 hours; dilute 1:20 before drenching soil around bulbs to avoid nutrient burn
Pruning
  • Deadhead spent flowers to prevent unwanted self-seeding (optional)
  • Trim yellowed foliage only after it has completely died back to avoid damaging the underground bulb
  • Divide overcrowded bulb clumps in late summer to maintain plant health and flowering performance
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA confirmed toxic; contains cardiac glycosides that can cause severe cardiac irregularities and organ damage

Humans: Ingestion may cause nausea, vomiting, and abdominal pain due to cardiac glycoside content

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Garden Uses & Culture

Culture: N/A

Usage: Ornamental spring bulb for garden beds, rock gardens, and naturalized lawn areas