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Oleaceae FAMILY

Olea europaea

Olea europaea

Edibility
4/5
Medicinal
3/5

Safety & Hazards

None known

Cultivation Details

HabitEvergreen Tree
GrowthSlow

Easily grown in a loamy soil[1] and tolerating infertile soils[2], it prefers a well-drained deep fertile soil[2]. A drought resistant plant once established, it succeeds in dry soils[2]. Requires a sunny position[3]. Tolerates salty air[4]. Plants are slow-growing and very long-lived[5]. The olive is very commonly cultivated in Mediterranean climates for its edible seed, there are many named varieties[6, 7]. Trees can produce a crop when they are 6 years old and continue producing a commercial yield for the next 50 years[2] - many trees continue to give good yields for hundreds of years, even when their trunk is hollow[8]. They succeed outdoors in the milder areas of Britain[9], though plants rarely produce fruit when grown in this country[8, 10, 2], preferring warm temperate regions with mild moist winters and hot dry summers[2]. Some reports say that trees often fruit in south-western England[9, 4]. Generally, older trees are hardy to about -10°c[3, 2]. They require the protection of a south facing wall when grown in the London area[9]. At least some cultivars are self-fertile[2]. Some cultivars have been selected mainly for their fruits whilst others have been selected for their oil[2]. 'Mission' is grown for its edible fruits. It is vigorous, prolific and very cold resistant[2]. 'Moraiolo' is grown for its oil, it is very hardy and strong-growing[2]. Flower production depends on a 12 - 15 week period of diurnally fluctuating temperatures with at least 2 months averaging below 10°c[2]. Pruning can encourage non-fruiting water-shoots[2]. Weighing down or arching the branches can encourage fruiting[2]. The plants fruit best on wood that is one year old so any pruning should take this into account[11]. An olive branch is a traditional symbol of peace[12], laurel leaves were used by the ancient Greeks to crown winners of the Olympic games[8]. Plants have male flowers and bisexual flowers[2].

Propagation

Seed - sow late winter in a shady position in a greenhouse[13]. Home produced seed should be given a period of cold stratification first[13]. Where possible, it is best to sow the seed as soon as it is ripe in a greenhouse in the autumn. Prick out the seedlings into individual pots when they are large enough to handle and grow them on in the greenhouse for at least their first winter, perhaps for their first 2 - 3 winters. Plant them out into their permanent positions in early summer and give them some protection from winter cold for at least their first winter outdoors[PFAF]. Cuttings of half-ripe wood, 5 - 10cm with a heel, mid summer in a frame. Good percentage[13]. Cite as: Temperate Plants Database, Ken Fern. temperate.theferns.info. 2026-02-21. <temperate.theferns.info/plant/Olea+europaea>

Pollinators

Wind

References

  1. [1]RHS Dictionary of Plants plus Supplement. 1956 — F. Chittendon. · Oxford University Press · 1951 · ISBN - ↩︎Comprehensive listing of species and how to grow them. Somewhat outdated, it has been replaced in 1992 by a new dictionary (see [ 200 ]).
  2. [2]The New RHS Dictionary of Gardening. 1992. — Huxley. A. · MacMillan Press · 1992 · ISBN 0-333-47494-5 ↩︎Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.
  3. [3]Growing Unusual Fruit. — Simmons. A. E. · David & Charles; Newton Abbot. · 1972 · ISBN 0-7153-5531-7 ↩︎A very readable book with information on about 100 species that can be grown in Britain (some in greenhouses) and details on how to grow and use them.
  4. [4]Trees and Shrubs in Cornwall. — Thurston. ↩︎Trees and shrubs that succeed in Cornwall based on the authors own observations. Good but rather dated.
  5. [5]The RHS Gardener's Encyclopedia of Plants and Flowers — Brickell. C. · Dorling Kindersley Publishers Ltd. · 1990 · ISBN 0-86318-386-7 ↩︎Excellent range of photographs, some cultivation details but very little information on plant uses.
  6. [6]Fruits of the Earth. — Bianchini. F., Corbetta. F. and Pistoia. M. ↩︎Lovely pictures, a very readable book.
  7. [7]Cornucopia - A Source Book of Edible Plants. — Facciola. S. · Kampong Publications · 1990 · ISBN 0-9628087-0-9 ↩︎Excellent. Contains a very wide range of conventional and unconventional food plants (including tropical) and where they can be obtained (mainly N. American nurseries but also research institutes and a lot of other nurseries from around the world.
  8. [8]A Modern Herbal. — Grieve. · Penguin · 1984 · ISBN 0-14-046-440-9 ↩︎Not so modern (1930's?) but lots of information, mainly temperate plants.
  9. [9]Trees and Shrubs Hardy in Great Britain. Vol 1 - 4 and Supplement. — Bean. W. · Murray · 1981 · ISBN - ↩︎A classic with a wealth of information on the plants, but poor on pictures.
  10. [10]Ornamental Shrubs, Climbers and Bamboos. — Thomas. G. S. · Murray · 1992 · ISBN 0-7195-5043-2 ↩︎Contains a wide range of plants with a brief description, mainly of their ornamental value but also usually of cultivation details and varieties.
  11. [11]Encyclopaedia of Herbs and their Uses. — Bown. D. · Dorling Kindersley, London. · 1995 · ISBN 0-7513-020-31 ↩︎A very well presented and informative book on herbs from around the globe. Plenty in it for both the casual reader and the serious student. Just one main quibble is the silly way of having two separate entries for each plant.
  12. [12]Herbs of Greece. — Niebuhr. A. D. · Herb Society of America. · 1970 · ISBN - ↩︎A pleasant little book about Greek herbs.
  13. [13]Propagation of Trees, Shrubs and Conifers. — Sheat. W. G. · MacMillan and Co · 1948 · ISBN - ↩︎A bit dated but a good book on propagation techniques with specific details for a wide range of plants.
  14. [14]Flora Europaea — ? · Cambridge University Press · 1964 · ISBN - ↩︎An immense work in 6 volumes (including the index). The standard reference flora for Europe, it is very terse though and with very little extra information. Not for the casual reader.
  15. [15]Sturtevant's Edible Plants of the World. — Hedrick. U. P. · Dover Publications · 1972 · ISBN 0-486-20459-6 ↩︎Lots of entries, quite a lot of information in most entries and references.
  16. [16]Flowers of the Mediterranean. — Polunin. O. and Huxley. A. · Hogarth Press · 1987 · ISBN 0-7012-0784-1 ↩︎A very readable pocket flora that is well illustrated. Gives some information on plant uses.
  17. [17]Flora of the USSR. — Komarov. V. L. · Israel Program for Scientific Translation · 1968 · http://www.biodiversitylibrary.org · ISBN - ↩︎An immense (25 or more large volumes) and not yet completed translation of the Russian flora. Full of information on plant uses and habitats but heavy going for casual readers. It can be downloaded from the Internet.
  18. [18]Dictionary of Economic Plants. — Uphof. J. C. Th. · Weinheim · 1959 · ISBN - ↩︎An excellent and very comprehensive guide but it only gives very short descriptions of the uses without any details of how to utilize the plants. Not for the casual reader.
  19. [19]Plants for Man. — Schery. R. W. ↩︎Fairly readable but not very comprehensive. Deals with plants from around the world.
  20. [20]Economic Botany. — Hill. A. F. · The Maple Press · 1952 · ISBN - ↩︎Not very comprehensive, but it is quite readable and goes into some detail about the plants it does cover.
  21. [21]Encyclopaedia of Medicinal Plants. — Chiej. R. · MacDonald · 1984 · ISBN 0-356-10541-5 ↩︎Covers plants growing in Europe. Also gives other interesting information on the plants. Good photographs.
  22. [22]The Herb Book. — Lust. J. · Bantam books · 1983 · ISBN 0-553-23827-2 ↩︎Lots of information tightly crammed into a fairly small book.
  23. [23]Glossary of Indian Medicinal Plants (Including the Supplement). — Chopra. R. N., Nayar. S. L. and Chopra. I. C. · Council of Scientific and Industrial Research, New Delhi. · 1986 · ISBN - ↩︎Very terse details of medicinal uses of plants with a wide range of references and details of research into the plants chemistry. Not for the casual reader.
  24. [24]Handbook of the Bach Flower Remedies — Chancellor. P. M. · C. W. Daniel Co. Ltd. · 1985 · ISBN 85207 002 0 ↩︎Details the 38 remedies plus how and where to prescribe them.
  25. [25]Effect of Athamanta sicula oil on inhibition of mild steel corrosion in 1M HCl — A. Bouyanzer et al · 2015 · http://derpharmachemica.com/archive.html · ISBN 0975-413X ↩︎Research paper on the value of plant extracts, especially Athamanta sicula, in protecting steel from acid corrosion.
  26. [26]Nature's Colors - Dyes from Plants. — Grae. I. · MacMillan Publishing Co. New York. · 1974 · ISBN 0-02-544950-8 ↩︎A very good and readable book on dyeing.
  27. [27]Flowers of Europe - A Field Guide. — Polunin. O. · Oxford University Press · 1969 · ISBN 0192176218 ↩︎An excellent and well illustrated pocket guide for those with very large pockets. Also gives some details on plant uses.
  28. [PFAF]Plants for a Future — pfaf.org ↩︎