Cover the newly planted seed with an even layer of straw. Do not apply the straw so thickly that you cannot see the topsoil below. Seed Superstore recommends one 80-pound bale for 1000 square feet of lawn and suggests barley, wheat or oat straw over hay, since hay will seed itself into the lawn.
Water the lawn with a sprinkler three times a day for 10 minutes at a time, preferably in the morning, afternoon and evening. If you cannot water midday, water only in the morning and evening. Do not allow puddles to form. Water the lawn daily until the grass seed germinates, typically seven to 14 days.
Remove the straw once you see the grass seed has germinated.