Flora of Azerbaijan or Vegetation of Azerbaijan refers to the plants, trees, flowers which can be found in Azerbaijan. Azerbaijan has a very rich flora, more than 4,500 species of higher plants have been registered in the country. Due to the unique climate in Azerbaijan, the flora is much richer in the number of species than the flora of the other republics of the South Caucasus. About 67% of the species growing in the whole Caucasus can be found in Azerbaijan.