March is a good time to start herbs indoors. They will need warmth and light, so look for a south- or soutwest-facing room with plenty of sunlight. You can also use fluorescent lights (seedlings will need to be within 8 inches of the light) and heat mats, which provide bottom warmth to help get seeds off to a good start. You can find these heat mats at garden centers and sometimes at home improvement centers. The dill you may want to hold off on. It grows tall and starts easily in the garden by sowing seeds directly in the soil when the weather has warmed. It's not well suited to indoor propagation.