PlantFun
Plant Needs
Sunlight
Partial to full shade preferred; tolerates dappled morning sun but avoid harsh midday direct sun to prevent foliage scorch
Watering
Water when the top 2 cm of soil is dry; avoid overwatering to prevent root rot in heavy soils
Temperature
Hardy to -15°C; tolerates cool temperate conditions, avoid prolonged heat above 28°C to prevent foliage fading
Characteristics
- Leaf: Dense, rounded to oval leaves with scalloped margins; deep purple-black glossy foliage
- Flower: Spikes of tiny tubular blue-violet flowers held 5–10 cm above foliage
- Stem: Creeping stolons that root at nodes to form continuous mats
Care Guide
Watering
Keep soil evenly moist; increase frequency during hot, dry spells
Fertilization
Light, balanced feed once monthly. Use diluted organic feed to support foliage color and flowering
Eggshell powder topdress：Crush dried eggshells to fine powder; sprinkle 1 teaspoon per plant every 3 months to boost soil calcium content without risk of nutrient burnPruning
- Trim back spent flower spikes after blooming to maintain neat growth
- Thin overcrowded mats in early spring to improve airflow and prevent fungal issues
- Remove any green revertant leaves promptly to preserve the cultivar's purple-black foliage color
Toxicity
Warning: this plant may be toxic.
Pets & Humans
Pets: ASPCA-verified non-toxic to cats
Humans: No known toxic effects on humans
Garden Uses & Culture
Culture: Symbolizes humility and quiet devotion in some European folk traditions
Usage: Groundcover for shade gardens, rockeries, border edging, and erosion control on slopes
