PlantFun
Plant Needs
Sunlight
Full sun to partial shade; thrives in bright direct sunlight for consistent blooming
Watering
Water deeply when top 2 cm of soil is dry; drought-tolerant once established
Temperature
Tolerates mild frost down to 5°C; prefers temperate summer temperatures below 30°C
Characteristics
- Leaf: Narrow, linear to lanceolate gray-green leaves, densely hairy for moisture retention
- Flower: Trumpet-shaped pale blue to lavender blooms, 2–3 cm wide, opening only in full sun
- Stem: Trailing prostrate stems that form low, spreading ground cover mats
Care Guide
Watering
Keep soil slightly moist during active growth
Fertilization
Optional diluted feed once at start of growth. Excess fertilizer may reduce flowering and promote leggy growth
Crushed eggshell powder：Sprinkle a thin layer on soil surface to improve drainage and add calcium; avoid direct contact with stems to prevent burnPruning
- Deadhead spent blooms to encourage extended flowering through mid-summer
- Trim back overgrown stems in late autumn to maintain compact mat form
- Remove yellow or damaged foliage to improve airflow and reduce pest risk
Toxicity
Warning: this plant may be toxic.
Pets & Humans
Pets: ASPCA does not list Convolvulus cantabrica as toxic to cats
Humans: No documented toxicity to humans; safe for handling and accidental small ingestion
Garden Uses & Culture
Culture: N/A
Usage: Ornamental ground cover for rock gardens, alpine beds, and dry slopes
