Try to aim for a seed spacing of at least
3.96 feet (1.22 metres) and sow at a depth of around
0.25 inches (0.64 cm).
By our calculations, you should look at sowing Desprez à Fleur Jaune about 35 days before your last frost date.
As Desprez à Fleur Jaune is hardy, ensure temperatures are mild enough to plant out - wait until after your last frost date to be on the safe side.