Vegetation of Vransko Lake area belongs to eumediterranean and submediterranean zones.
The most valuable habitats in the Park area are open water and wetland, reed beds, Holm Oak, Aleppo Pine and Mediterranean shrub and grassland.
Open water and wetland habitats are very important for maintaining high level of biodiversity. Many endangered and threatened species find their shelter there, but their value to humans is also high. These habitats are traditionally densely inhabited, they serve as food source, place for recreation etc. Wetlands represent a place where large quantities of water if retained and in that way they provide water source and prevent floods.Aquatic plants live in the lake, either submerged or floating. Because the lake is a bit salty, there are few different species present, but those that do occur here are dominant and abundant.
Reed beds are mostly present in the Ornithological reserve where the water is shallow. Many birds use the reed bed for their nesting place, feeding place and shelter.
Holm Oak forests are well developed on higher altitudes in the northern part of the Park and contain many other plant species. They are present mostly in the form of Eu-Mediterranean maquis.
Aleppo Pine forests are planted in the southern part of the Lake.
Monk’s Pepper Vitex angus-castus
Mediterranean shrubs are well developed and contain many aromatic and spiky plants. Dry grasslands are present on shallow calcareous soils and they are quite nice in the area of Crnogorka near it.
There are 707 plant species recorded at Vransko Lake. Unfortunately, many of them are threatened; 2 are critically endangered, 6 are endangered, 9 are sensitive. 95 plant species is protected by law and 51 species are under the highest level of protection.
The great variety of plant species is a result of great diversity of habitats in the area of Vransko Lake.