PlantFun
Plant Needs
Sunlight
Full sun to partial shade; prefers cool, bright alpine conditions, avoid intense midday summer sun in warm regions
Watering
Keep soil consistently moist but well-drained; avoid waterlogging in cold winter months
Temperature
Hardy to -15°C; prefers cool temperatures, avoid prolonged heat above 25°C
Characteristics
- Leaf: Opposite, cross-arranged, lance-shaped, glossy dark green, sessile
- Flower: Terminal, star-shaped, deep blue to violet, 2–3 cm wide, with four pointed petals
- Stem: Erect, unbranched, smooth, green to reddish-green
Care Guide
Watering
Keep soil evenly moist; water when top 1 cm of substrate dries
Fertilization
Diluted balanced feed once every 2 weeks. Discontinue fertilization in late summer to prepare plants for winter dormancy
Eggshell powder topdress：Crush clean, dried eggshells to fine powder; sprinkle lightly on soil surface once every 3 months to boost calcium levels and improve soil drainagePruning
- Remove spent blooms to encourage prolonged flowering through early autumn
- Cut back dead foliage to ground level in late autumn after first frost
- Thin overcrowded clumps in early spring to improve airflow and reduce disease risk
Toxicity
Warning: this plant may be toxic.
Pets & Humans
Pets: ASPCA confirms no toxicity to cats
Humans: No known toxicity to humans; historical medicinal use for digestive support (not a substitute for professional medical care)
Garden Uses & Culture
Culture: Symbolizes justice and sincerity in traditional European folklore
Usage: Ornamental alpine garden plant; historical medicinal use for digestive complaints (not recommended for modern self-medication)
