Soak in warm water for 24 hours before planting. Sow seeds outside when there is still a chance of light frost or start seeds earlier and set out as small plants. Seeds germinate in 14-21 days. 1
Sow 0.25 inches (0.64 cm) deep with a guideline distance of 0.98 inches (2.5 cm). Soil temperature should be kept higher than 10°C / 50°F to ensure good germination.By our calculations, you should look at sowing Triple Curled about 35 days before your last frost date.
Prefers full sun to partial shade and well-drained, rich soil. 1
Ensure that temperatures are mild and all chance of frost has passed before planting out, as Triple Curled is a half hardy plant.