Grass seed can survive the winter, and planting during the winter season is known as dormant seeding. If you put down grass seed in November or December, the seed will just lay dormant until the soil starts to warm in spring.Click to see full answer. Just so, what is the best grass seed to plant in the winter?Winter is here, but it’s not too late to get your lawn seed in! Look for Cool Season lawn varieties like those below. Ryegrass and Fescues are the best winter performers. Keep in mind that with the exception of RTF Tall Fescue, Cool Season Varieties are hard to keep green over summer in Australia.Subsequently, question is, will grass seed grow in winter UK? Winter grass seeding. So the most favourable times of year for sowing are Spring (mid-March until April are usually the best times), and late summer (September-October). With that in mind, it’s worth steering away from a winter grass seed sowing. In respect to this, what temperature is too cold for grass seed? If the daytime temperature is below 60°F then soil temperature is below 50°F, making it too cold; if there is frost or still a danger of frost, then it’s too cold. If it’s too cold, the grass seeds will likely rot.What happens to grass seed if it freezes?Freezing temperatures generally have a negligible effect on grass seeds before they germinate. However, real problems can occur if temperatures drop below freezing before newly emerged seedlings have had a chance to develop sufficiently.