Oliveira do Mouchão, Tree of Public Interest in Cascalhos, Mouriscas, Portugal

Oliveira do Mouchão is a monumental Olea europaea olive tree at Cascalhos, in the parish of Mouriscas, municipality of Abrantes, central Portugal. It is listed as a Tree of Public Interest, a classification it received in 2007. In 2016 researcher José Luís Lousada, of the University of Trás-os-Montes and Alto Douro, dated it by dendrometry at about 3350 years, making it the oldest tree in Portugal.

In 2016 José Luís Lousada, a researcher at the University of Trás-os-Montes and Alto Douro, dated the olive tree at about 3350 years by dendrometry, making it the oldest tree in Portugal. It has been classified as a Tree of Public Interest since 2007. It placed second in the Tree of the Year contest in 2020 and 2021.

The name comes from mouchão fishing: in the early 20th century, fishermen gathered under this olive tree before setting off to fish. The tree was classified as a Tree of Public Interest in 2007 and placed second in the Tree of the Year contest in 2020 and 2021.

The olive tree stands in the hamlet of Cascalhos, in the parish of Mouriscas, municipality of Abrantes. It is an isolated tree in open ground, reached by local roads; visitors approach it on foot and view it from outside. It has been classified as a Tree of Public Interest since 2007, so it is signposted as protected heritage.

In 2016 José Luís Lousada, a researcher at the University of Trás-os-Montes and Alto Douro, dated the olive by dendrometry at about 3350 years, which would make it the oldest tree in Portugal. It placed second in the Tree of the Year contest in 2020 and 2021.