Aim to sow
0.25 inches (0.64 cm) deep and try to ensure a gap of at least
3.96 feet (1.22 metres).
By our calculations, you should look at sowing Vick's Caprice about 35 days before your last frost date.
Vick's Caprice is hardy, so ensure you wait until all danger of frost has passed in your area before considering planting outside.