PlantFun
Plant Needs
Sunlight
Partial sun to full shade; tolerates dense woodland shade, avoid harsh midday summer sun
Watering
Water deeply when top 2–3 cm of soil is dry; drought-tolerant once established
Temperature
Hardy to -15°C; prefers cool temperate conditions; avoid prolonged heat above 30°C
Characteristics
- Leaf: Glossy dark green oval foliage, opposite arrangement, evergreen year-round
- Flower: Five-petaled pale blue to violet blooms, 2–3 cm in diameter
- Stem: Trailing, rooting at nodes to form weed-suppressing mats
Care Guide
Watering
Keep soil evenly moist during active growth; avoid waterlogging
Fertilization
Diluted balanced liquid feed once monthly. Avoid over-fertilization to prevent excessive foliage growth at the expense of blooms
Eggshell powder topdress：Crush dried eggshells into fine powder; sprinkle lightly on soil surface to boost calcium levels and improve drainage; avoid overapplication to prevent soil alkalinity spikesPruning
- Trim overgrown stems in early spring to maintain a compact, neat form
- Remove dead or yellowing foliage to improve airflow and reduce fungal disease risk
- Thin dense mats to prevent moisture buildup and encourage even growth
Toxicity
Warning: this plant may be toxic.
Pets & Humans
Pets: ASPCA: Toxic; vinca alkaloids may cause vomiting, diarrhea, lethargy, and loss of appetite
Humans: Contains vinca alkaloids; large ingestion may cause mild gastrointestinal upset
Garden Uses & Culture
Culture: Symbolizes friendship and remembrance in some European folk traditions
Usage: Groundcover for erosion control, shaded garden borders, and trailing container foliage
