Look to ensure a distance
11.7 inches (30.0 cm) between Tuscawilla Blackout seeds when sowing to make sure your seedlings have enough space.
By our calculations, you should look at sowing Tuscawilla Blackout about 42 days before your last frost date.
Ensure that temperatures are mild and all chance of frost has passed before planting out, as Tuscawilla Blackout is a hardy plant.