Low-tree layer · Evergreen fruit / oil tree
Olive
Olea europaea
An evergreen oil and table-fruit tree for sunny, free-draining, frost-managed sites. Best where summers are warm and winters not severely wet and cold.
Also known as: Olive
Layer
Low-tree layer
Climate
Warm temperate, Temperate
Sun
Full sun essential.
Water
Drought tolerant once established; water while young and in severe drought for fruit fill.
Soil
Free-draining; dislikes wet heavy clay. Tolerates poorer soils if drainage is excellent.
Size
4–8 m (pruned smaller) H · 4–6 m W
Growth
Slow to moderate
Frost
Young trees frost tender; mature trees handle light to moderate frost once hardened. Hard freezes damage.
Edible uses
Fruit (cured or processed), Oil
Harvest window
Autumn to early winter
Ecological functions
Evergreen structure · Wind-tolerant canopy on dry sites · Flower forage
Wildlife value
Birds take fruit · Insect forage at bloom
Human uses
Table olives (cured) · Oil · Hedging / structure
Propagation
Cuttings or grafted named cultivars; seedlings variable.
Maintenance
Prune for light and harvest access; manage peacock spot in humid sites; harvest promptly.
NZ growing notes
Performs in dry sunny districts with good drainage — warmer North Island coasts, Nelson–Marlborough and parts of Canterbury. Humid wet winters increase disease pressure.
In the food forest
Olive suits dry sunny edges of a food forest where drainage is excellent. Keep understorey sparse and drought-tolerant — oregano, yarrow and clover rather than wet-loving roots.
Establishment
Plant in spring on mounds or free-draining sites. Stake young trees against wind. Water through the first two summers, then ease off. Prune for light into the canopy.
NZ honesty
Not a plant for cold wet hollows. Fruiting and oil quality need local proof in humid northern gardens; dry eastern districts are more honest homes.
Suitable NZ regions
Companion plants
References
- NZ olive growing practice — Drainage and summer heat drive fruit quality.