Aim to sow
0.49 inches (1.25 cm) deep and try to ensure a gap of at least
5.85 inches (15.0 cm). For optimal germination, soil temperature should be a minimum of
5°C / 41°F.
By our calculations, you should look at sowing Grosse brune paresseuse about 53 days before your last frost date.
Grosse brune paresseuse is tender, so ensure you wait until all danger of frost has passed in your area before considering planting outside.