Most of the park is covered by a mixture of beech and fir trees growing on limestone and dolomite. Numerous variations characterised by local microclimates and types of soil can also be found. Here one can find single trees of sycamore maple, elm, ash, and sometimes some yew. The beech and fir forest gradually gives way to another large forest zone - the subalpine beech forest with lettuce grass, which grows in areas of the park at heights of between 1200 m and 1400 m above sea level.