Try to aim for a seed spacing of at least
0.2 inches (0.5 cm) and sow at a depth of around
0.1 inches (0.25 cm).
By our calculations, you should look at sowing Burgundy Semi-Double about 56 days before your last frost date.
Burgundy Semi-Double is very hardy, so ensure you wait until all danger of frost has passed in your area before considering planting outside.