Mountain ravine forests (ash and maple) are found here and there at the foot of bars of conglomerate rock. In addition, in the far south of Vosges du Nord, the Silver Fir (Abies alba) keeps the beech company. It is here that it reaches its northernmost limit in the Vosges.

For several centuries Man has been modifying the natural forests by planting certain species in preference to others, the Scots Pine (Pinus silvestris) for example, and introducing exotic species from elsewhere in Europe, such as spruce and larch, and from North America: the Douglas Fir (Pseudotsuga menziesii), the Weymouth Pine and the Red Oak.
In fact Man has planted so many coniferous species that the original broad-leaved forest has been dramatically changed.