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Cork Oak
Quercus suber
Qualifies for Tree Enhancement Program
Climate Resiliency
4 out of 5 stars
Narrow, erect habit when young. Rounded habit in maturity. Leathery, medium to dark green 3 oval leaves with fuzzy gray to yellow undersides and toothed margins. Leaves become chlorotic in alkaline conditions. Distinctive thick, fissured bark. The outer layer of bark from a mature tree is harvested for cork, giving this tree its common name. Catkin flowers are insignificant. Acorns are a food source for wildlife. Susceptible to caterpillars, powery mildew, root rot, and scale.
- Plant type: Tree
- Maintenance level: Low
- Water requirement: Medium, Low
- Sun exposure: Full, Part Sun, Morning Sun, Afternoon Sun, Reflected Heat
- Height range: 40 Feet
- Width range: 30 Feet
- Canopy value: 530 ft²
- Growth rate: Slow
- Seasonal habit: Semi-Evergreen
- Flower color: Yellow
- Flower season: Spring
- Fruit color: Brown
- Fruit season: Autumn
- General foliage color: Grey, Green
- Hardiness cold tolerance: 10 °F
- Soil preference: Well Drained
- Native location: Mediterranean, North Africa
- PH preference: Acidic, Neutral
- Sunset zones: 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 18, 19, 20, 21, 22, 23, 24
- USDA hardiness zone: 7a, 7b, 8a, 8b, 9a, 9b, 10a, 10b, 11a, 11b
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