Try to aim for a seed spacing of at least
1.17 inches (3.0 cm) and sow at a depth of around
0.12 inches (0.3 cm).
By our calculations, you should look at sowing Sorbet about 90 days before your last frost date.
As Sorbet is half hardy, ensure temperatures are mild enough to plant out - wait until after your last frost date to be on the safe side.