Hedgehogs hibernate in winter in substantial nests, called hibernacula, using medium sized leaves to build them with and often build them in dense brambles, under hedges, in bushes under sheds and in log piles. Leaving corners of gardens and green spaces messy is a great way to provide hedgehogs with these nesting options in the winter.
Come the summer hedgehogs still make nests but these are generally less substantial and aren’t as well insulated. Using material such as grass and moss, these structures are much flimsier and looser than their winter nests.
To give hedgehogs an extra helping hand, hedgehog houses can be a welcome stay in both the winter and summer. You can find some tips on building a hedgehog home here. By putting some bedding such as straw in your hedgehog house can increase the change of having a prickly resident stay in your hedgehog house.