If you want to collect firewood in the forest floor of public forests, you need to purchase a foraging permit through the Danish Nature Agency.

It is allowed for everyone, with or without a foraging permit, to collect branches and twigs from the forest floor, as well as cut branches from fallen trees. It is also allowed to gather moss and pine cones for personal use.

Be aware that firewood is available at many nature campsites, though not all of them.

If you wish to forage in private forests, you need to make an agreement with the landowner.