Winter is the easiest time of the year: in December and January, the lawn hardly needs any attention or care. Of course, this is always provided that it was well prepared in late autumn, fertilised and mowed one last time. The lawn should not be too long (maximum approx. 5cm) when the first snow falls, so that the blades do not break under the snow pressure.
The only task that may actually remain is to sweep away the last leaves. Under no circumstances should these be left on the lawn, as the grass below often dies or even begins to rot. Once the lawn is free of leaves, it is best to simply leave it alone. So you can sit back and relax when it comes to lawn care in the frosty winter.