Try to aim for a seed spacing of at least
5.85 inches (15.0 cm) and sow at a depth of around
0.51 inches (1.3 cm). For optimal germination, soil temperature should be a minimum of
10°C / 50°F.
By our calculations, you should look at sowing Nine Star Perennial about 42 days before your last frost date.
Nine Star Perennial is tender, so ensure you wait until all danger of frost has passed in your area before considering planting outside.