Danish Scurvygrass (Cochlearia danica)

Danish Scurvygrass

Cochlearia danica

It carries bright, peppery leaves to fight old-world scurvy. Edible herbaceous perennial; common name: Danish scurvygrass.

Partial sun
2–3/week
Beginner
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Plant Needs

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Sunlight Prefers partial sun to full sun; tolerant of coastal salt spray and cool, windy conditions
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Watering Keep soil consistently moist; avoid allowing the root zone to dry out completely during warm periods
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Temperature Hardy to -10°C; thrives in cool, temperate coastal climates and avoids extreme heat
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Characteristics

  • Leaf: Spoon-shaped glossy green basal rosette leaves with a sharp, peppery flavor
  • Flower: Tiny four-petaled white blooms arranged in terminal clusters
  • Stem: Slender, upright branching stems that rise above the basal leaf rosette
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Care Guide

Watering

Keep soil evenly moist; water when the top 1 cm of soil feels dry

Fertilization

Diluted balanced feed once every 2 months. Use a diluted, low-nitrogen feed to avoid promoting leggy growth

Crushed eggshell topdress:Crush dried eggshells into fine powder; dust lightly on the soil surface to boost calcium levels without burning roots
Pruning
  • Deadhead spent flower clusters to encourage prolonged blooming
  • Trim back leggy stems in late summer to maintain a compact rosette shape
  • Remove yellowing basal leaves to improve airflow and reduce pest risk
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: Non-toxic to cats; no reported adverse health effects

Humans: Edible in moderation; no known toxic effects when consumed appropriately

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Garden Uses & Culture

Culture: Historically used by sailors to prevent scurvy due to its high vitamin C content

Usage: Edible herb for salads, garnishes, and medicinal teas; coastal erosion control plant