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Olea europaea 'Carolea' (Olive 'Carolea')

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Variety or Cultivar
'Carolea' is an upright, oval to rounded, frost hardy, evergreen tree with leathery, narrowly elliptic to lance-shaped, grey-green leaves, paler beneath, and panicles of tiny, fragrant, creamy-white flowers from late spring into summer followed by green fruit ripening dark purple.
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Season of interest

Flower

Spring Summer Autumn Winter
Flower

Foliage

Spring Summer Autumn Winter
Foliage
Height and spread

Height and spread

Size Max height Max spread To maturity
8 m 5 m 10-20 years
26 ft 16 ft 10-20 years

Where to grow

Soil type
  • Chalky
  • Clay
  • Loamy
  • Sandy
Soil drainage
  • Well-drained
Soil pH
  • Acid
  • Alkaline
  • Neutral
Sunlight
  • Partial Shade
  • Full Sun
Aspect
  • South
Exposure
  • Sheltered

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Additional plant details

Cultivation

Grow in fertile, sharply drained soil in a sheltered, sunny site. Drought tolerant once established. Under glass, grow in loam-based compost with added sharp sand in full light. Feed monthly & water moderately in growth; water sparingly in winter. Self-sterile so need another olive for pollination and fruit set.

Suggested uses

Banks and Slopes, Containers/Patio, Beds and borders, Mediterranean, Cottage/Informal, Hedging/Screens, Low Maintenance, Conservatory, Foliage only

UK hardiness

H4

USDA zones

Zone 8, Zone 9, Zone 10, Zone 11

Sunset zone

8, 9, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, H1, H2

WUCOLS

North-Central Coastal = Very Low
Central Valley = Very Low
South Coastal = Low
South Inland = Low
High and Intermediate Desert = Low
Low Desert = Low

Foliage

Evergreen

Habit

Rounded, Oval-headed

Native to

Garden origin

Drought tolerant

No

Flood tolerant

No

Fragrance

Flowers are fragrant.

Toxicity

Not toxic

Plant care

Pruning

Pruning group 1. Can be trained as a patio tree with a single trunk. If grown under glass, prune in spring to restrict size.

Propagation methods

Semi-ripe cuttings

Pests

Scale insects

Diseases

Generally disease-free.

Plant container grown plants in deep fertile, well-drained soil

Selective pruning only (only if needed)

Plant container grown plants in a sunny sheltered spot

Protect from cold drying winds (in cold areas)

Plant in fertile, humus-rich, well-drained soils

Bring tender indoors if container grown (in cold areas)

Apply a fertiliser container grown plants regularly

Take semi-ripe cuttings

Other plants

Plants in this Genus (0)

Olea

Companion plants (2)

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Phlomis italica
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Phlomis italica Phlomis
Helleborus foetidus
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Helleborus foetidus Stinking hellebore
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