Try to aim for a seed spacing of at least
1.95 inches (5.0 cm) and sow at a depth of around
0.5 inches (1.27 cm).
By our calculations, you should look at sowing Whirlybird Cherry about 14 days before your last frost date.
Ensure that temperatures are mild and all chance of frost has passed before planting out, as Whirlybird Cherry is a hardy plant.