Basil seeds take between eight and 14 days to germinate and emerge from the soil. After germination, look for the first set of true leaves two to three weeks later. Then, two to three weeks after the first set of true leaves emerge, basil plants should be about 6 inches tall and ready to plant out in the garden. Just sow basil plant seeds evenly by covering them with about ?-inch of soil. Keep the soil moist and make sure you remove any weeds. The growing basil seeds should germinate within a week. The seedling can be recognized by D-shaped seed leaves that will have the flat sides facing toward each other.