Shallot (Allium ascalonicum)

Shallot

Allium ascalonicum

Its mild onion scent holds kitchen comfort and hidden risk. Bulbous herbaceous perennial; common name: shallot.

Full sun
1–2/week
Beginner
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Plant Needs

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Sunlight Requires full sun for optimal bulb development; tolerates partial shade in hot climates, or bright indirect light for indoor container growth
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Watering Water thoroughly when the top 2 cm of soil feels dry; avoid overwatering to prevent bulb rot and fungal growth
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Temperature Thrives in 15–25°C; can tolerate short periods of light frost (-5°C) during dormancy, but prolonged cold may damage bulbs
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Characteristics

  • Leaf: Slender, hollow, linear green leaves with a distinct onion-like aromatic scent
  • Bulb: Clustered small, elongated bulbs with papery coppery-brown outer skins
  • Flower: Dense umbel of small, star-shaped pale pink to white flowers atop a tall, smooth scape
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Care Guide

Watering

Keep soil consistently moist during active leaf and bulb growth

Fertilization

Apply diluted balanced liquid feed every 2 weeks. Use nitrogen-rich feed to support leaf growth early in the season

Eggshell powder topdress:Crush clean, fully dried eggshells into fine powder; sprinkle lightly on soil surface every 2 months to add calcium without burning delicate roots
Pruning
  • Trim yellowing or browning leaves at the base to maintain plant health and airflow
  • Deadhead spent flower scapes after blooming to redirect energy to bulb development
  • Thin overcrowded bulb clusters in autumn to reduce competition for nutrients and space
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: Toxic; contains N-propyl disulfide which damages red blood cells, leading to hemolytic anemia

Humans: Ingestion of very large quantities may cause mild gastrointestinal upset (nausea, diarrhea); minimal risk with typical culinary use

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Garden Uses & Culture

Culture: Symbolizes domestic comfort and culinary tradition in Mediterranean and Middle Eastern cuisines

Usage: Culinary herb/vegetable used to add mild onion-like flavor to savory dishes