Is cork endangered or running out?

cork is not endangered

Cork, a versatile and eco-friendly material, has long been at the center of a pervasive myth suggesting that using cork contributes to the decline of cork oak forests, labeling them as endangered. In this article, we debunk this myth, exploring the sustainability of cork and the measures in place to protect the vital cork oak ecosystems.

Myth: The Cork Oak is Endangered

Many have heard the alarming claim that cork oak trees are endangered, perpetuated by warnings against buying products made from cork. This myth, rooted in misinformation, may have sinister origins, potentially fabricated by the wine industry seeking cheaper alternatives to cork stoppers.

The Reality:

Contrary to the myth, cork oak trees are not endangered. In 1923, the Portuguese government legally protected cork oaks to prevent improper or out-of-season harvests, designating them as "endangered" due to the numerous endangered species depending on these forests for survival. According to Amorim, a major cork manufacturer, Portugal alone has enough harvestable cork to meet market demand for the next century.

cork oak trees are not running out

The Legal Protection of Cork Oaks

The cork oak is the only tree protected by law in Portugal. This protection is essential for the country's economy, as a third of global cork production comes from this region. The Portuguese government has implemented stringent regulations, prohibiting deforestation and limiting usage to activities that preserve or enhance tree health. Specific areas, marked as Natural Parks and Reserves, ensure the survival and conservation of these vital trees.

The Extraordinary Law:

Created in the 1970s in response to outrage from Portuguese cork producers, the law states that without government permission, it's illegal to cut down any cork oak in Portugal. Violators face hefty fines and are barred from using the land for 25 years, a measure introduced after 500,000 acres of cork were replaced with eucalyptus for the pulp industry.


cork harvesting

How does cork harvesting work? 

Cork harvesting is a meticulous and sustainable process known as stripping, where the outer bark of the cork oak tree is carefully removed by skilled workers called descortiçadores. Using special axes, the bark is hand-stripped in long sheets, minimizing damage to the tree. This non-invasive method, done once every 9-12 years during warmer months, allows the tree to regenerate its protective bark layer, promoting growth. Remarkably, a single cork oak can be harvested up to 16 times in its lifetime. This sustainable practice not only protects the trees but also safeguards animal habitats, ensuring a harmonious coexistence with nature.

Cork Oaks' Geographic Requirements

Cork oaks can only produce viable cork bark suitable for the industry in the Mediterranean region, encompassing Portugal, Spain, and parts of North Africa. Specific climatic and geographic conditions, such as high temperatures, ample rainfall, particular soil types, and an undisturbed habitat, are required for healthy cork oak trees to thrive.


cork tree 

Environmental Benefits:

Cork oak forests offer numerous ecological benefits, improving air quality, providing a home for diverse wildlife, and aiding in water retention and soil conservation. In the Mediterranean, over 100,000 people depend directly or indirectly on the cork sector, making it a vital component of the region's socio-economic fabric.

Harvesting cork is a sustainable and regenerative process. Cork oak trees, the only trees that regenerate with bark removal, absorb up to five times more carbon dioxide than other trees, contributing to a carbon-neutral cycle. Harvested trees quickly form new layers of cork, storing more CO2 and producing more oxygen. The cork oak forests are essential for preserving biodiversity, representing one of the 35 most critical ecosystems globally, comparable to the Amazon rainforest.


Why it matters

It is important to dispel the the myth; cork is not endangered or running out. The cork industry, exemplified by sustainable practices endorsed by the Forest Stewardship Council, plays a pivotal role in maintaining these ecosystems. By understanding the truth behind cork production, consumers can confidently embrace cork products, contributing to environmental conservation and supporting sustainable practices. So, the next time you uncork a bottle or choose a cork-made accessory, rest assured that you're not just making a wise choice but also supporting a greener world.



  1. Myths About Cork - Exposed! MARCH 19, 2019. How Cork.\
  2. 10 Things You Didn't Know About Cork. APRIL 7, 2023. How Cork.
  3. Where Does Cork Come From? The Fascinating Journey From Tree to Your Home. MARCH 15, 2023. How Cork.

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