Olea europaea 'Koroneiki' (F)

Trees

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A compact, self-fertile, vigorous and productive evergreen tree with silvery-green leaves. Small, inconspicuous white flowers appear in spring followed by very small green fruits which ripen to dark purple-black, with lots of flavour. A Greek variety prized for high-quality oil. Drought-tolerant, and ideal for containers or dense planting

Position

Full sun

Soil Types

Chalk, Clay, Loam, Sand

Max Height

4-8 metres

Max Spread

4-8 metres

Size

Time to Maturity: 20–50 years
Max Spread: 4-8 metres
Max Height: 4-8 metres

Growing Conditions

Chalk Clay Loam Sand

Moisture: Well–drained
pH: Acid or Alkaline or Neutral

Position

Full sun

Aspect: South–facing
Exposure: Sheltered
Hardiness

Hardiness Ratings

All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets

H1A: under glass all year (>15C)
H1B: can be grown outside in the summer (10 - 15)
H1C: can be grown outside in the summer (5 - 10)
H2: tolerant of low temperatures, but not surviving being frozen (1 to 5)
H3: hardy in coastal and relatively mild parts of the UK (-5 to 1)
H4: hardy through most of the UK (-10 to -5)
H5: hardy in most places throughout the UK even in severe winters (-15 to -10)
H6: hardy in all of UK and northern Europe (-20 to -15)
H7: hardy in the severest European continental climates (< -20): H4
Drought Resistance: Yes

Colour & Scent

Season	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family: Oleaceae
Native to GB/Ireland: No
Foliage: Evergreen
Habit: Bushy, Columnar upright
Genus: Olea are small or medium sized evergreen trees with simple, opposite leathery leaves. Flowers are in terminal or axillary panicles, and are small, whitish and followed by an ovoid, oblong or globose drupe (fruit).
Name Status: Accepted

How to Grow

Cultivation

Grow in deep, fertile, sharply-drained soil in full sun. Under glass, grow in peat-free John Innes No 3 with added sharp sand, in full light. See olive cultivation

Propagation

Propagate by semi-ripe cuttings in summer

Suggested planting locations and garden types

Architectural
City and courtyard gardens
Gravel garden
Mediterranean climate plants
Patio and container plants
Sub-tropical
Conservatory and greenhouse
Edible fruit

Pruning

pruning group 1. Under glass prune to restrict size in spring

Pests

May be susceptible to scale insect

Diseases

high risk host for xylella fastidiosa. May be susceptible to honey fungus (rarely). May be susceptible to olive scab