Vegetation is influenced by relief, climate, soil and human factors. As a result of the complexity of climate-orographic factor, flora appears very heterogeneous, in terms of composition. We meet two levels:
- The specific level of boreal mountain peaks, with a harsh climate, is one of the most remarkable levels in vertical distribution of vegetation. Made up of coniferous forests, among which predominantly is seen Spruce (Picea excelsa), starts at altitudes of 8-900 metres, in Nemira and Ciuc Mountains, sometimes mixed with Fir (Abies Alba). The Beech Tree (Fagus silavatica) climbs at an altitude of 2-300 metres. A typical example is encountered in the Chibritărie Basin, on Uz Valley, where you could see a beautiful oak forest, climbing up to 1000 metres. At the upper limit of this level, altitude meadows start to show up.
- The nemoral level – is the largest of levels and consists of mixed forests of Beech and Pine, Beech forests and Beech with Quercinee.
These mixed forests occupy almost the entire mountain area in the middle of Uz River. They are formed of: beech, fir, spruce, and various hardwoods (birch, field maple, hornbeam and maple). At the inferior limit of this level, we can see beech forests mixed with quercinee, especially sessile (Quercus petre). These forests are widespread along the lower course of Uz River, on the hills which frame Dărmăneşti depression.
Regarding the natural reserves of vegetation, due to irrational exploitation, some valuable species (such as yew -Taxus baccata) disappeared from the structure of the conifers level.
Today this species is also found sporadically in the basin of Izvorul Alb gill (White Spring). In the lower third of Uz Valley, on interfluves and terraces surrounding the area, meadows and hayfields occur, having a high nutritional value.