With September just a week away, fall weather is fast approaching. Beginning of fall is the best time to seed, aerate and slit seed, or sod.  Seeding and covering it with a straw blanket is best for new construction, or sod if you want more immediate results.  For existing lawns that could use some rejuvenation, you could aerate the yard and slit seed.  Aerating loosens the soil, which will make it easier for the machine to cut into the yard and drop seeds in.  This will help the yard become more full and lush in the spring. This is also the time to fertilize using a fall fertilizer mix.