The best time plant grass seed is from late August to early September. Spring and fall provide favorable growing conditions for cool season lawn grasses. Seeding in late summer provides two peak growth seasons before the new lawn must experience a period of hot, dry summer weather. Dormant seeding may be done in November.
Low temperatures keep the grass seed from germinating.
Early spring seedings are not as successful as the previous two times. The grass plants do not have enough time to get well established before hot summer weather. Grass seed can be spread over the ground with a fertilizer spreader. Use about 4 pounds of seed per 1000 square feet of area. Drag a broom rake over the seeded area to mix the seed into the soil surface.