Sow at a depth of approx.
0.51 inches (1.3 cm) and aim for a distance of at least
5.85 inches (15.0 cm) between Broccoli plants. Soil temperature should be kept higher than
10°C / 50°F to ensure good germination.
By our calculations, you should look at sowing Fiesta F1 about 42 days before your last frost date.
Ensure that temperatures are mild and all chance of frost has passed before planting out, as Fiesta F1 is a tender plant.