Cork Oak
Quercus suber
treeFunctions
Plant Monograph
Iconic Mediterranean tree with thick, deeply fissured bark creating dramatic sculptural forms. Excellent shade tree for large landscapes, providing year-round evergreen structure. The gnarled trunk and spreading canopy create stunning focal points in xeriscape and Mediterranean-style gardens.
Design Role
Iconic Mediterranean tree with thick, deeply fissured bark creating dramatic sculptural forms. Excellent shade tree for large landscapes, providing year-round evergreen structure. The gnarled trunk and spreading canopy create stunning focal points in xeriscape and Mediterranean-style gardens.
Herbalistic
This information is for educational purposes only. Always consult a qualified healthcare professional before using any plant medicinally.
Cork bark has traditionally been used for its astringent properties in treating diarrhea and dysentery. The acorns, when properly processed to remove tannins, have been used as food and coffee substitute. Bark extracts show anti-inflammatory and antioxidant properties in modern research.
Kitchen
Acorns can be ground into flour after leaching out bitter tannins, traditionally used in Mediterranean cuisines for bread and porridge. Roasted acorns serve as a coffee substitute. In Spain and Portugal, pigs fed on cork oak acorns produce highly prized jamon iberico.
Ecology
Keystone species of Mediterranean ecosystems, supporting over 200 vertebrate species. The thick cork bark provides fire resistance, allowing trees to survive wildfires. Creates unique 'montado' or 'dehesa' savanna ecosystems that balance agriculture, forestry, and biodiversity conservation.
Identification
Never consume a plant based solely on written descriptions or illustrations. Consult a local botanist when in doubt.
Evergreen oak reaching 20m tall with thick, spongy bark up to 15cm thick. Leaves are small (4-7cm), oval with wavy or slightly toothed edges, dark green above and grayish beneath. Acorns are 2-3cm long with deep cups covering half the nut. Native to southwest Europe and northwest Africa.
Building & Timber
While cork is the primary product (harvested every 9-12 years for wine stoppers and insulation), the wood itself is extremely hard and dense. Used traditionally for tools, charcoal, and naval construction. The timber is difficult to work but highly durable for outdoor applications.
Curiosities
A single tree can produce enough cork for 4,000 wine bottles per harvest. Trees must be 25 years old before first harvest and can live over 200 years. Portugal produces 50% of world's cork. The bark regenerates completely, making it one of the most sustainable forestry practices on Earth.