Sow
0.25 inches (0.64 cm) deep with a guideline distance of
2.97 inches (7.62 cm). Soil temperature should be kept higher than
13°C / 55°F to ensure good germination.
By our calculations, you should look at sowing F1 reflex about 49 days before your last frost date.
Ensure that temperatures are mild and all chance of frost has passed before planting out, as F1 reflex is a very hardy plant.