If you soak the seeds in a glass of water overnight, before sowing them, they germinate a lot better!
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 Margaret Long about 14 days before your last frost date.
As the seedlings develop, thin to achieve a final spacing of 25cm.
Ensure that temperatures are mild and all chance of frost has passed before planting out, as Margaret Long is a hardy plant.