 Secondary forests formed by deforestation have a more open canopy with an understory dominated by "Comocladia dentata"; grasses, lianas and epiphytes are poorly represented.Western pine forests are found in the northern and southern plains surrounding the Sierra de los Órganos in Pinar del Río Province and on the northern half of Isla de la Juventud.Annual precipitation is less than , with a dry season from November to April and a rainy season from May to October.