Carthusian Pink (Dianthus carthusianorum)

Carthusian Pink

Dianthus carthusianorum

Its fringed pink blooms carry a soft, spicy perfume. Clumping herbaceous perennial; common name: Carthusian Pink.

Full sun
1–2/week
Beginner
🌱

Plant Needs

☀️
Sunlight Requires full sun for optimal blooming; tolerates partial shade in hot, arid regions to prevent leaf scorch
💧
Watering Water deeply when the top 2 cm of soil is completely dry; avoid standing water to prevent root rot
🌡️
Temperature Hardy to -15°C; tolerates moderate summer heat, but avoid prolonged exposure to temperatures above 35°C
🔍

Characteristics

  • Leaf: Narrow, linear, gray-green evergreen foliage forming tight, compact clumps
  • Flower: Fringed, bright pink to magenta blooms in loose terminal clusters; emits a spicy, clove-like fragrance
  • Stem: Slender, upright green stems with minimal branching
🛠️

Care Guide

Watering

Keep soil evenly moist during active growth; avoid overwatering

Fertilization

Diluted balanced feed once every 2 weeks. Discontinue fertilization after August to prepare plants for winter dormancy

Eggshell powder topdressing:Crush clean, fully dried eggshells into fine powder; sprinkle 1 teaspoon per plant around the base and water lightly to release nutrients
Pruning
  • Deadhead spent blooms regularly to encourage continuous flowering throughout summer
  • Trim back foliage to 5 cm in late autumn to maintain a neat clumping habit
  • Remove any yellow or damaged leaves to improve airflow and reduce disease risk
⚠️

Toxicity

Warning: this plant may be toxic.

Pets & Humans

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

Humans: No known toxic effects on humans

📖

Garden Uses & Culture

Culture: Symbolizes affection and steadfast admiration in Victorian floriography

Usage: Ornamental for rock gardens, cottage garden borders, and cut flower arrangements