In some cities, the municipal utilities announce a date for each street when the Christmas trees are collected. In others, non-profit organisations, e.g. scouts, take care of the collection. In my region these dates are around Epiphany, i.e. 6th of January.
In any case you can bring the tree to a local muncipal recycling centre (Wertstoffhof, Bringhof, …)
In some cities, the municipal utilities announce a date for each street when the Christmas trees are collected. In others, non-profit organisations, e.g. scouts, take care of the collection. In my region these dates are around Epiphany, i.e. 6th of January. In any case you can bring the tree to a local muncipal recycling centre (Wertstoffhof, Bringhof, …)