Sow at a depth of approx.
0.12 inches (0.3 cm) and aim for a distance of at least
1.17 inches (3.0 cm) between Horned violet plants.
By our calculations, you should look at sowing Princess Mix about 90 days before your last frost date.
Ensure that temperatures are mild and all chance of frost has passed before planting out, as Princess Mix is a hardy plant.