The forests areas of the province are the natural forests located in the northern fringes which are the continuation of the mountainous forests of the Alborz mountains, the juniper forests on the southern skirts of the Alborz range with tall and dense trees, the desert forests situated in the vicinity of Chah Jam and Khar Tooran with Tamarisk trees.
Artificial forests that come under the category of parks alongside the cities. In addition to which the entrance and exit routes of the province have also been manually planted for about 160 km.
The most important parks in Semnan are, the Forest Parks of Sookan, Komesh and Mahalat in Semnan , the Forest Parks of Garmsar, Damqan and Shahrood.
The major portion of Semnan province is in the desert area. The Kahak Desert, south of Garmsar and the Haj Ali Qoli Desert, south of Damqan can be quoted as good examples worth visiting.