Sow at a depth of approx.
0.25 inches (0.64 cm) and aim for a distance of at least
3.96 feet (1.22 metres) between Rose plants.
By our calculations, you should look at sowing Poulyc004 about 35 days before your last frost date.
Poulyc004 is hardy, so ensure you wait until all danger of frost has passed in your area before considering planting outside.