Sow at a depth of approx.
1.95 inches (5.0 cm) and aim for a distance of at least
3.9 inches (10.0 cm) between Bean plants. Soil temperature should be kept higher than
16°C / 61°F to ensure good germination.
By our calculations, you should look at sowing Primel about 14 days after your last frost date.
Ensure that temperatures are mild and all chance of frost has passed before planting out, as Primel is a tender plant.