Based in its vegetation and geographic features, the area of confluence the Pazinčica River has a sub-Mediterranean character.
Its plant communities mainly consist of deciduous species of trees and bushes.
 Thermophile (preferring warm areas) vegetation is represented by two habitats;

Forests of pubescent oak and oriental hornbeam (Querco-Carpinetum orientalis)
- the most thermophile community of these forests
Forests of pubescent oak and hop hornbeam (Ostrio-Quercetum pubescentis)
- the most frequent in the confluence of the Pazinčica
- the layer of bushes presents bloodtwig dogwood, mahaleb cherry, Rhus toxicodendron and common privet

Colder and northern slopes or well canyons, especially on the flysch base, are characterized by components of mesophile vegetation.
They grow in the following forest communities;
Seaside beech forest with autumn moor grass
- inhabit lower areas and narrow valleys
Forests of peduncular oak with  autumn moor grass
Microclimate conditions within the cave obviously divide the flora into two parts.
The brim of the cave and its sunny sides mainly feature species with thermophile character;
various reeds, hellebore, common germander, and fennel.
The shadier northern and northeast slopes of the cave feature species with particularly mesophile character; baneberry, O. Pallens (pale orchid?), dead nettle.
There are also numerous ferns, moss and mushrooms.

Around the cave grows a variety of endangered and protected species of ground level flora.
Martagon lily and Istrian hellebore are strictly protected, and the followings regional species are protected;

• cyclamen
• Hepatica Nobilis
• common periwinkle
• Italian lords and ladies
• European ginger root 
• sea holly other
• snowdrop
• Autumn joy
• Salomon’s seal

On the rocks around the cave and also on the walls around the Castle and on the bell tower of St. Nicholas frequently grows the endemic Adriatic species Campanula pyramidalis.