Look to ensure a distance
1.95 inches (5.0 cm) between seeds when sowing - bury at a depth of at least
0.0 inches (0.0 cm) deep.
By our calculations, you should look at sowing cascade of color mix about 105 days before your last frost date.
Ensure that temperatures are mild and all chance of frost has passed before planting out, as cascade of color mix is a tender plant.