The vegetable life of the province is plentiful and varied. Tucumán is located in a region of great beauty, with magnificent wilderness of giant trees, forests, rivers and mountains.

The province is divided into 6 regions according to its vegetation:

EASTERN WOODLAND REGION: within the plain. Predominating species: red quebracho, jujube tree, hawthorn, black and white algarroba, chañar and hackberry tree.

WESTERN WOODLAND REGION: It is located between the Valles Calchaquíes and the Cajón or Quilmes sierras chain. Characteristic trees are: black and white algarroba, terebinth tree and others of little value.

CEBIL REGION: Located in the middle of the two above regions. Vegetation is luxuriant. The prevailing species are: pacará, red cebil, rosewood, palo blanco, cerro pine tree, small alder and others. It is also a region of heavy rains: from 35 inches to 47 inches (900 to 1,200 mm) per year.

SUBTROPICAL FOREST REGION: It is at the feet of sierras, reaching a height of 3940 feet (1,200 m). It is the region of high and thick forests and of minor species such as ferns and climbing plants. Among trees are: white tipas, pacará, lapacho, laurel, nut-tree and others.

QUEÑOA REGION: It covers sierras higher than 1,200 m. In this area there is mainly a development of oak, and also of solanum, white hackberry tree, cerro pine tree, small alder and others.

PUNA REGION: It encompasses the highest mountain peaks, from 9,800 to 16,400 feet (3,000 to 5,000 m) high. Vegetation only grows up to a few inches high.