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