PlantFun
Plant Needs
Sunlight
Full sun to partial shade; tolerates light afternoon shade in hot, dry climates to prevent leaf scorch
Watering
Water when the top 1–2 cm of soil dries completely; avoid overwatering to prevent root rot in poorly drained soil
Temperature
Hardy to -15°C; withstands mild summer heat up to 25°C; protect from prolonged extreme drought
Characteristics
- Leaf: Small, oval to oblong, glaucous blue-green, opposite arrangement
- Flower: Tiny, deep blue, four-petaled spikes clustered at stem tips
- Stem: Slender, trailing, rooting at nodes to form dense, spreading mats
Care Guide
Watering
Keep soil evenly moist during active growth periods
Fertilization
Diluted balanced liquid feed once monthly. Use half-strength fertilizer to avoid overfeeding
Eggshell powder topdressing：Crush dried eggshells into fine powder; sprinkle 1 teaspoon per plant every 3 months to boost soil drainage and calcium levels without causing nutrient buildupPruning
- Deadhead spent flower spikes promptly to encourage extended blooming through early summer
- Trim back overgrown mats in late autumn to maintain a compact, tidy form
- Remove yellowed or damaged foliage to improve airflow and reduce fungal disease risk
Toxicity
Warning: this plant may be toxic.
Pets & Humans
Pets: ASPCA: Non-toxic to cats
Humans: No known toxicity to humans
Garden Uses & Culture
Culture: N/A
Usage: Groundcover for rock gardens, border edging, and container trailing accents; pollinator-friendly for native bees
