Delicate, trailing blooms perfect for walls, rock gardens, and paving cracks. A charming self-seeder that brings life to overlooked spaces.
For optimal germination rates, initiate seed propagation indoors under controlled conditions—unless the species exhibits a high sensitivity to root disturbance. This approach allows precise regulation of temperature, humidity, and light, improving germination consistency and seedling viability. Do not skip any recommended seed treatments, as they are essential for uniform and successful germination.
Seed Treatment
Cold Stratification: 14–28 days of cold stratification by mixing seeds with moist sand and refrigerating at 35–40°F (2–5°C).
If seedlings sprout in the bag, gently transplant them into pots or the garden immediately.
Optimum Temperature for Germination
15–20°C (59–68°F)
Keep the soil lightly moist throughout the germination period.
Humidity: Use a humidity dome or clear cover to maintain consistent moisture during germination. Open the dome BRIEFLY once per day to allow fresh air in and reduce mold risk. Remove the dome entirely once seedlings emerge.
Germination Time: up to 42 days AFTER stratification
Light Requirements
Seeds require light to germinate.
Use grow lights to maintain 12–16 hours of light per day.
Press them gently onto the soil surface — do not cover.
When To Sow
- Sow indoors or outdoors in spring or fall
- Ideal for crevices, walls, and stone paths
- Use well-draining soil and avoid heavy covering
Post-Germination Care
- Keep moist but not waterlogged
- Thin or transplant when true leaves appear
- Prefers partial shade; tolerates full sun in cooler climates
- Once established, it’s drought-tolerant and self-seeds
Quick Facts
- Perennial (Zones 5–9)
- Height: 10–15 cm (4–6 in)
- Spread: Up to 30 cm (12 in)
- Blooms from spring to fall
- Excellent for vertical gardens and ground cover