Try to aim for a seed spacing of at least
1.88 feet (58.0 cm) and sow at a depth of around
0.5 inches (1.27 cm). Soil temperature should be kept higher than
21°C / 70°F to ensure good germination.
By our calculations, you should look at sowing Blenheim Orange about 14 days before your last frost date.
Ensure that temperatures are mild and all chance of frost has passed before planting out, as Blenheim Orange is a hardy plant.
By our calculations, you should look at planting out Blenheim Orange about 88 days before your last frost date.