Sow
0.49 inches (1.25 cm) deep with a guideline distance of
5.85 inches (15.0 cm). Soil temperature should be kept higher than
5°C / 41°F to ensure good germination.
By our calculations, you should look at sowing Brown Mignonette about 60 days before your last frost date.
As Brown Mignonette is tender, ensure temperatures are mild enough to plant out - wait until after your last frost date to be on the safe side.
By our calculations, you should look at planting out Brown Mignonette about 45 days before your last frost date.