Flora

The predominant plant species are: Chestnut (Castanea sativa), governed by tall trees in the best areas and coppice in the others, Larch pine (Pinus nigra), Common alder (Alnus glutinosa), and Neapolitan alder (Alnus cordata) in spontaneous thickets covering all valley parts, cooler areas and riverbeds, Beech (Fagus sylvatica) and White Spruce (Abies alba) species of great naturalistic value present in groups and in more or less extensive pure and mixed forests in the higher and cooler areas, Holm Oak (Quercius ilex), White Poplar (Populus alba), Quaking Poplar(Populus tremula), Yew (Taxus baccata), Common Willow (Salix alba), Common Maple (Acer campestre) and Robina (Robina pseudoacacia) at a sporadic level in the lower areas.

The shrub vegetation is rich in the most typical essences of the Mediterranean maquis: Broom, Heather, Arbutus, Myrtle, Phillyrea, Cistus, Lentiscus, Holly, etc.

The natural stand of the Park territory is also interesting for the ecological and silvicultural characteristics of the silver fir. This conifer is in the Greenhouses a fairly uniform species from the point of view of genetic makeup; this makes it more stable and resistant to environmental adversity, compared to other ecotypes rooted in Europe.In fact, the white spruce is threatened by a number of pathological manifestations that make one fear for the future of the species (root rot,fir dieback).The causes are due to climatic aspects, genetic factors and environmental pollution.

Serre silver fir is included in the national book of seed woods for its peculiar genetic qualities. The seed from these forests is harvested in September and October for use in reforestation in various parts of Europe.