Try to aim for a seed spacing of at least
3.12 inches (8.0 cm) and sow at a depth of around
0.58 inches (1.5 cm). For optimal germination, soil temperature should be a minimum of
24°C / 75°F.
By our calculations, you should look at sowing Snowball Y Improved about 14 days before your last frost date.
Snowball Y Improved is hardy, so ensure you wait until all danger of frost has passed in your area before considering planting outside.