This should not be attempted earlier than the month of March, and only then when soil is in good friable condition. For out-of-door sowing, a double line is recommended. The lines nine inches apart and the seeds three to four inches apart in the lines and planted one inch deep. Slugs and snails are apt to prey on the young plants and must be watched for. A slight dusting of lime is a good protection. Birds are also depredators in some districts, and if the rows cannot be protected by nets, a few lines of black sewing thread stretched tightly on short pins a few inches above the plants usually scare the birds. If the germination is good, and if the young plants are not destroyed, it will be found they are rather thick in the lines as sown. Thin them to six or nine inches apart - or even twelve, if very strong. The thinnings can be transplanted, if carefully lifted. Give them away to a friend, and so encourage the growth of good sweet peas!