Lobularia maritima: seeds

Lobularia maritima, known in English as sweet alyssum or sweet Allison and in French as alysson maritime, alysse odorante, or corbeille d'argent, is a hardy annual native to southern Europe, covered in tiny, four-petalled flowers, usually white or purple but there are pink, pale yellow, pale blue, and peach cultivars available.

Last year I grew alyssum from seed direct-sown in the garden in early spring; but since we also had a number of self-sown volunteers come up (clearly distinguishable since they were a different colour!), clearly this is a great candidate for winter-sowing. The seeds are about 1 long and light to medium brown, not too difficult to handle.