|Nick the seed coating and sow in spring under glass, half an inch deep (sweet peas need darkness to aid germination) in pots of compost, either singly, or several to a 3in pot, to be pricked out later. Keep moist. Pinch out growing tips when 3 or 4 true leaves have formed. Plant out in a sunny position in rich, moist, soil or compost, providing support in the form of wigwams or netting (unless you wish to treat them as a trailing plant in baskets). Much could be said on the subject of sweet pea growing, but I will mention only the bare bones here - that sweet peas need humus-rich soil, moisture, sunshine and feeding, and regular picking or dead-heading to encourage repeat flowering. Much more information can be found elsewhere online for those who wish to research the subject more thoroughly.