Lagos is famous for its cliffs and its sea. But drive twenty minutes inland, or walk the limestone coast towards Cape St Vincent, and the land starts telling its own story in trees. Some of them have been here longer than the town walls. One of them has the wrong name. And one of them is probably holding the cork in your wine bottle.
Quick facts
- The cork oak is Portugal’s national tree, and Portugal produces more than half of the world’s cork.
- The Monchique oak grows wild in Portugal only in the Serra de Monchique, and despite its Latin name it does not grow naturally in the Canary Islands.
- The dwarf fan palm is the only palm native to mainland Europe.
- The Mata Nacional de Barão de São João, in the municipality of Lagos, is being replanted with native species after a 2025 wildfire.
The Cork Oak: Portugal’s National Tree
If the Algarve had a signature tree, it would be the sobreiro, the cork oak (Quercus suber). In December 2011 Portugal’s parliament declared it the national tree, and it has earned the title: Portugal produces more than half of the world’s cork.
The magic is in the bark. It is thick, flexible and remarkably fire-resistant, and it can be stripped from the trunk without killing the tree. Harvesters come back roughly every nine years, and you will often see a painted number on a trunk marking the year of the last harvest.
The biggest cork oak in the Algarve is said to grow on the southern slopes of Picota, near Monchique, at a place called Corte Grande: 17.5 metres tall, with a trunk almost 6 metres round.
The Monchique Oak: a Tree with the Wrong Name
Here is our favourite piece of Algarve botany trivia. The carvalho-de-Monchique goes by the Latin name Quercus canariensis, the “Canary Islands oak”. It does not grow naturally in the Canary Islands at all. The name comes from an old labelling mistake, and it stuck.
In Portugal this oak grows wild only in the Serra de Monchique, which makes it one of the rarest trees in the country. One giant on the EN 267, between Alferce and Monchique, stands 25 metres tall, measures 9 metres around the base and is thought to be about 150 years old.
The Strawberry Tree: Fruit with a Kick
In autumn the hills around Monchique are dotted with little red and orange berries that look like strawberries grown on a shrub. This is the medronheiro, the strawberry tree (Arbutus unedo). The fruit is edible, but locally it is famous for something stronger: aguardente de medronho, a clear fruit brandy that is still an important part of the mountain economy. In Monchique the trees usually stay under about 5 metres, though elsewhere they can reach 10.
If someone offers you a small glass after dinner, now you know where it came from.
The Holm Oak: the Quiet One
The azinheira, or holm oak (Quercus rotundifolia), is the cork oak’s tougher, less glamorous cousin. Small, dark, leathery leaves, no famous bark, but perfectly built for heat and drought. It grows alongside the other oaks in the Serra de Monchique.
The Coast: Wild Olives, Carob and Europe’s Only Native Palm
The trees nearest to Lagos are not the tall ones. On the limestone slopes and rocky platforms of the far west, towards Cape St Vincent, the native vegetation is a low, wind-shaped scrub that botanists describe as an Algarve speciality. It is built around the sabina-da-praia, a coastal juniper (Juniperus turbinata), mixed with:
- Zambujeiro, the wild olive, ancestor of the olive trees you see in every orchard
- Alfarrobeira, the carob tree
- Aroeira, the mastic tree (Pistacia lentiscus)
- Palmeira-anã, the dwarf fan palm (Chamaerops humilis)
That little fan palm deserves a moment. It is the only palm native to mainland Europe, and Portugal is part of its natural range. The tall palms lining seaside promenades were planted; this knee-high, spiky one was here first.
The Carob: Wild Tree, Working Tree
The carob is a bit of both. It grows wild in that coastal scrub, and it has also been the backbone of the traditional Algarve dryland orchard for centuries, alongside almond, fig and olive. It asks for almost nothing: no irrigation, no fertiliser (its roots work with soil bacteria to feed it nitrogen), and it is happy on dry, hilly limestone. Around 17,000 hectares of carob grow in the Barrocal and the hills behind the coast.
Scientists are still untangling which carob populations around the Mediterranean are truly wild and which were spread by people over thousands of years. In the Algarve the honest answer is: probably both.
Its orchard companion, the fig, is described as the oldest domesticated crop in the Algarve. These farmed trees are not “native” in the strict sense, but they shaped the landscape you drive through today as much as any wild oak.
What Doesn’t Belong
Not every big tree in the Algarve is local. In Monchique you will find towering Norfolk Island pines, southern magnolias and plane trees, all planted, some of them around 150 to 200 years ago.
More important are the eucalyptus plantations. In August 2018 a wildfire west of Monchique burned for seven days and affected around 28,000 hectares. Dense stands of eucalyptus and pine added to the fire risk. Since then the Renature Monchique project, run by GEOTA with partners including the ICNF, has been replanting with seven native species, including cork oak and Monchique oak, with a goal of 75,000 trees.
Closer to Home: Barão de São João
You do not need to go to Monchique to see this story. The Mata Nacional de Barão de São João, a national forest inside the municipality of Lagos, was hit by a wildfire on 21 September 2025 that destroyed more than 129 hectares. A local movement, Mata Viva!, with around 100 volunteers, is now working with the ICNF on a seven-hectare experimental area for native biodiversity: replanting native species, clearing invasive plants and helping young growth survive.
A Green Park in the Middle of Town
Trees are not only a story for the hills. Lagos Mais Verde, a non-partisan citizens’ movement, has proposed turning the site of the old EB 2,3 school, near the town hall, into a green park of about 2.3 hectares: an urban forest planted with the Miyawaki method, a Mediterranean garden of native plants, a playground with picnic tables, space for education and community life, and a kiosk café.
At the end of April 2026 the Assembleia Municipal de Lagos, the municipal assembly, voted unanimously in favour of creating the park on the basis of the movement’s project. Building it is up to the Câmara Municipal, which had not yet committed to it by October 2026. You can follow the project, and see the plans, at lagosmaisverde.org.
Where to See Them
- Monumental Trees routes, Monchique. The Via Algarviana has three short circuits (Town, Picota and Fóia) that link the region’s most remarkable trees, including the giant cork oaks and Monchique oaks above.
- Barão de São João. The national forest is a short drive from Lagos and a good place to see both the damage and the recovery.
- The west coast towards Sagres and Cape St Vincent. Look down, not up: the fan palms, junipers and wild olives hug the ground.
We brought 25 plants into our two apartments because we love living among green things. Out here, the Algarve does it better, with trees that have learned to live on almost no water, survive fire and hand us cork, carob and brandy in return.
Sources
- Monumental Trees Route guide, Via Algarviana
- Árvores da floresta autóctone: Sobreiro, Câmara Municipal de Odivelas
- Renature Monchique project, International Oak Society
- Algarvian juniper and kermes oak scrub, IPR database
- Chamaerops humilis, Flora of Gibraltar
- Chamaerops humilis, Plants of the World Online, Royal Botanic Gardens, Kew
- Traditionelle Landwirtschaft in der Algarve, University of Hohenheim (German)
- The carob tree at the crossroad of domestication center and refugia, HAL
- Community unites to bring Barão de São João forest back to life, Portugal Resident
- Lagos Green Park, Lagos Mais Verde
- Políticos aprovam por unanimidade projeto de criação de grande parque verde no centro de Lagos, Algarve Marafado, May 2026
- Lagos Mais Verde: Grünes Herz für Lagos, Entdecken Sie Algarve, October 2026