Science · Specimen Trees
Olive
Olive is a slow-growing evergreen with a rounded crown, silvery foliage and, in fruiting forms, drupes used for food and oil. Fruiting and nonfruiting cultivars should not be treated as interchangeable.
Profile
- Foliage
- Evergreen, with grey-green leaves and silvery undersides.
- Fruit
- Drupes change from green to purplish-black as they ripen.
- Cultivars
- Some ornamental cultivars produce no flowers or fruit.
Source: Olea europaea (Common Olive, European Olive, Olive) | North Carolina Extension Gardener Plant Toolbox ↗ — Direct species/genus account; identity and morphology only. Not used as stand-alone pest or irrigation proof.
Species and soil references do not establish universal moisture targets, monetary appraisals or pest diagnoses. Missing pest lists mean evidence has not been verified, not absence of pests.
Water & soil context
- Moisture (VWC)
- No universal numerical VWC target established; calibrate to soil, sensor placement and root-zone conditions.
- Salinity tolerance
- No profile-specific salinity rating retained without direct evidence.
- Drought tolerance
- Depends on identity, establishment, climate and soil; do not infer an irrigation threshold from drought tolerance.
Check moisture in the root ball and surrounding soil; avoid persistent saturation. Adjust irrigation to measured site conditions rather than a fixed percentage.
Source: Water Management and Pest Problems — UC IPM ↗ — General woody-landscape guidance, not a species-specific irrigation prescription: both deficit and excess moisture injure roots; new root balls can dry between irrigations. No universal VWC target.
Problems to watch
No species-specific list verified in the cited references. This does not mean absence of pests or stress; investigate changes with a qualified specialist.
Stress signs
No species-specific list verified in the cited references. This does not mean absence of pests or stress; investigate changes with a qualified specialist.
Where you'll find it
- Table olives
- Olive oil
Sources & scope
- Olea europaea (Common Olive, European Olive, Olive) | North Carolina Extension Gardener Plant Toolbox ↗
Direct species/genus account; identity and morphology only. Not used as stand-alone pest or irrigation proof.
- Water Management and Pest Problems — UC IPM ↗
General woody-landscape guidance, not a species-specific irrigation prescription: both deficit and excess moisture injure roots; new root balls can dry between irrigations. No universal VWC target.
More specimen trees
All Science profilesPublished botanical and soil references are distinct from GroundWorx product guidance. Moisture thresholds and monitoring depths require site calibration; sources do not establish product performance or diagnose stress.