Sow at a depth of approx.
0.12 inches (0.3 cm) and aim for a distance of at least
0.5 inches (1.27 cm) between Basil plants. For optimal germination, soil temperature should be a minimum of
10°C / 50°F.
By our calculations, you should look at sowing Sweet Bicolour about 20 days before your last frost date.
Sweet Bicolour is half hardy, so ensure you wait until all danger of frost has passed in your area before considering planting outside.