The area of the Mont Mars Nature Reserve offers a rich variety of plants, due to the variety of environments preserved in the valley bordered by the Pacoulla stream. The lower part of the Reserve is home to extensive larch and broadleaf forests, interspersed with areas rich in shrubs such as rhododendrons, blueberries, and fragrant dwarf junipers.
Higher up, amidst the scree and pastures, in the summer season, you can see the purple gentian, the Arnica montana, the Nigritella, and the mountain lily. Strolling in the Lei Long area, close to the alpine pasture, you can see the Austrian leopard's bane, and the large-flowered Sempervivum, together with the common water-crowfoot and the branched bur-reed, floating on the calm waters of the pond.