Try to aim for a seed spacing of at least
0.12 inches (0.3 cm) and sow at a depth of around
0.12 inches (0.3 cm). For optimal germination, soil temperature should be a minimum of
18°C / 64°F.
By our calculations, you should look at sowing Flower Power Spider Purple about 56 days before your last frost date.
Flower Power Spider Purple is half hardy, so ensure you wait until all danger of frost has passed in your area before considering planting outside.