The riparian vegetation is present in a fragmentary way along the irrigation channels and edges of meadows of the lagoon, with the presence of ash, alders, grey willows and willows. In any case, the freshest and well-preserved riparian forests are located in the nearby streams, such as the Vallcanera stream.
The undulating relief and the variety of microclimates and soils of the nearby lands allow a very varied vegetation to develop in the surroundings of the Estany de Sils, where Central European and Mediterranean elements alternate, with oaks, cork oaks, pine forests, shoots and dry meadows.