When to Overseed
Seed needs two things for successful germination 1) Warmth and 2) Water. This is why seeding is mainly advised during the Spring and Autumn, as rainfall is more frequent during these periods and soil temperatures are still relatively warm. However, if you own a sprinkler, seeding can be done throughout the summer months also – though we advise avoiding watering new shoots when the sun is high in the sky, as this will scorch the new grass.
Avoid seeding in the cold as low soil temperature and frosts will kill the seed.