Aim to sow
0.0 inches (0.0 cm) deep and try to ensure a gap of at least
1.95 inches (5.0 cm).
By our calculations, you should look at sowing Riviera Blue Splash about 105 days before your last frost date.
Riviera Blue Splash is tender, so ensure you wait until all danger of frost has passed in your area before considering planting outside.