Yes, you can plant grass seed in the winter, as long as temperatures are above 3°C and no frost is present/expected. To give the seed the best chance to thrive, we recommend a winter-specific blend.
If you’re overseeding in winter, you should use specially formulated winter grass seed. If you get a warm spell, you can leverage the winter repair mix along with a germination blanket—ideal for lawns and sports grounds with high traffic.
Grass seed should be kept dry and away from frost, so anywhere that’s away from a direct heat source, freezing conditions, or moisture is a good place to store your grass seed over winter.