Best sown outdoors where they are to flower.
Soil temperature should be kept higher than 10°C / 50°F to ensure good germination.By our calculations, you should look at sowing Pink Surprise about 35 days before your last frost date.
Thin to 6 inches (15cm) apart
Ensure that temperatures are mild and all chance of frost has passed before planting out, as Pink Surprise is a half hardy plant.