Salvinia minima is an aquatic fern native to central-southern America, the other species of this genus, about ten, originate from Europe, Asia and Africa. This plant is floating, and produces horizontal stems, originating from a short rhizome floating on the surface of the water, fleshy, green in color; two floating, oval or heart-shaped leaves emerge from the stems of the stems, covered with a thick whitish hair, which makes them water-repellent, as they tend to roll up along the deep central grain, the lower page has a thin dark hair, they are fleshy and thick; a third leaf is underwater, divided into thin filaments. The leaves are small, about 0.5-2.5 cm in diameter, and the plants tend to form large dense colonies. Salvinia molesta has much larger leaves, reaching 14-20 cm, which tend to pile up tightly, is one of the most invasive and infesting aquatic plants, now widespread in the rivers of much of the globe.
These small ferns love bright positions, with areas of partial shade; if placed in very sunny places they tend to become darker, with a reddish color. They develop best in ponds or ponds with low depth, in small rivers with calm waters; the plants of Salvinia at least they do not fear the cold or even the drought of the summer season: when they are in the absence of water, due to the drying of the body of water or the frost, the Salvinia they go into vegetative rest. To plant these plants, simply place them in a body of water and let them float.