Try to aim for a seed spacing of at least
0.98 inches (2.5 cm) and sow at a depth of around
0.47 inches (1.2 cm). For optimal germination, soil temperature should be a minimum of
4°C / 39°F.
By our calculations, you should look at sowing Navet de Nancy a Feuille Entiere about 35 days before your last frost date.