Try to aim for a seed spacing of at least
3.12 inches (8.0 cm) and sow at a depth of around
0.49 inches (1.25 cm). Soil temperature should be kept higher than
8°C / 46°F to ensure good germination.
By our calculations, you should look at sowing Bloomsdale about 60 days before your last frost date.
Ensure that temperatures are mild (minimum night temperatures should be around 0°C / 32°F) and all chance of frost has passed before planting out, as Bloomsdale is a half hardy plant.