Cork Oak
Quercus suber
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Description
The Cork Oak (Quercus suber) is a medium-sized evergreen tree native to the western Mediterranean region, thriving in regions with hot, dry summers and mild, wet winters. It is a keystone species in its native habitat, contributing significantly to biodiversity and ecosystem stability. In agroecology and regenerative agriculture, Cork Oaks are valued for their ability to improve soil structure, enhance water retention, and provide habitat for a wide range of species. They are integral to food forest systems, often serving as the canopy layer. Historically, Cork Oaks have been used for their bark, which is sustainably harvested every 9-12 years to produce cork, a renewable resource used in various industries. Guild companions include nitrogen-fixing plants like clover and lupines, which enhance soil fertility, and aromatic herbs such as rosemary and lavender that can deter pests.
Growing Details
Cork Oaks prefer well-drained, sandy to loamy soils with a pH of 5.5 to 7.0. Before planting, incorporate organic matter such as compost to improve soil fertility. Mulching with organic materials like straw or wood chips helps retain moisture and suppress weeds. Companion plants like clover and lupines can enhance nitrogen levels in the soil. Avoid overwatering, as Cork Oaks are drought-tolerant once established. Pruning should be minimal, focusing on removing dead or damaged branches. Harvest c
Tags
Keystone Specie
Carbon Farming
Attracts Wildlife
Fire Wood
Windbreak
Erosion Preventing
Bee Friendly
Visual Appeal
Range (Based on GBIF Data)
The map shows known occurrence points of <strong>Quercus suber</strong> recorded in scientific biodiversity databases.
Source: <a href="https://www.gbif.org" target="_blank">GBIF.org</a> โ Global Biodiversity Information Facility
Location & Timing
native geo location: Native to the western Mediterranean region
applicable geo region: Mediterranean
language used: en
Flowering:
beginning
of April for 30 days
Harvest:
beginning
of September for 60 days
Seed Start:
?
Indoor Start:
Transplant:
Uses & Benefits
Edible Rating:
(2/5)
edible uses: The acorns of the Cork Oak can be used as animal fodder and, after leaching to remove tannins, can be ground into flour for human consumption. They are rich in carbohydrates and fats, making them a valuable food source in traditional diets.
Medicinal Rating:
(2/5)
medicinal uses: Cork Oak bark has been used in traditional medicine for its anti-inflammatory and astringent properties. It is sometimes used in the treatment of skin conditions and as a topical application for wounds. The tannins in the bark can also be used to treat diarrhea when prepared as a decoction.
health concerns: Acorns must be properly leached to remove tannins before human consumption to avoid digestive discomfort.
other uses: Cork from the bark is used for bottle stoppers, flooring, insulation, and various other products. The tree also provides valuable habitat and is used for erosion control. Its wood can be used as firewood, and the leaves and branches can be used as mulch.
Scientific Literature
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Botanical data
specie: Quercus suber
common names: Cork Oak; Sobreiro; Alcornoque
family: Fagaceae
sub family:
tribe:
sub tribe:
genus: Quercus
Growing Conditions
area needed: 10.0 m
spacing: 10.0 m
growing difficulty: High
Deciduous / Evergreen:
Seed Temp (Opt/Min/Max): 15ยฐC / 10ยฐC / 20ยฐC
Plant Temp (Opt/Min/Max): 20ยฐC / 5ยฐC / 35ยฐC
water demands: Medium
humidity:
light demands: High
root type: Deep
frost tender: Medium
hardness:
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(8/10)
first harvest: 25 years
life span: 200 years
succession: Late
growth rate: Slow
max height: 20.0 m
max width: 15.0 m
soil preference:
Medium (Loam)
pH preference:
Neutral
flower type:
Monoecious
growth details: Cork Oaks prefer well-drained, sandy to loamy soils with a pH of 5.5 to 7.0. Before planting, incorporate organic matter such as compost to improve soil fertility. Mulching with organic materials like straw or wood chips helps retain moisture and suppress weeds. Companion plants like clover and lupines can enhance nitrogen levels in the soil. Avoid overwatering, as Cork Oaks are drought-tolerant once established. Pruning should be minimal, focusing on removing dead or damaged branches. Harvest c
Potential Disturbances: Cork Oaks can be affected by oak processionary moths, root rot, and powdery mildew. Natural pest management includes introducing beneficial insects like parasitic wasps to control moth populations. Companion planting with aromatic herbs such as rosemary and lavender can help deter pests. For fungal issues, ensure good air circulation and avoid overhead watering. Neem oil can be used as an organic spray to manage powdery mildew.
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