Growing olives in Italy
Italy has about 1.16 million hectares of olive groves, mostly on small farms, and produces less oil per hectare than intensive Spanish orchards. For a new planter, the decisions that matter are tree density and training form, how little nitrogen the trees actually need, and cover crops that protect sloping soil.
Scope: Olive growing in Italy based on the International Olive Council technique manual, a Sicilian planting-density trial and Ismea farm statistics. There is no single Italian extension calendar for dates, so this guide gives ranges and says so. Updated 2026-10-03.
At a glance
- Olive area
- About 1.16 million ha across 620,000 farms; 58% of farms manage under 3 ha3
- Oil production
- About 250,000 t in 2024/25; yields this decade are 9% below the last3
- Organic
- 24% of the area (279,000 ha) is organic3
- Mature spacing (IOC)
- 5 × 5 to 7 × 7 m (about 200–400 trees/ha); irrigated orchards 200–240 trees/ha have been most reliable1
- Sicily density trial
- 400–1,000 trees/ha gave 12–28 t/ha of olives and 1.5–5 t/ha of oil2
- Nitrogen removed
- About 3–4 g N per kg of fruit; yearly N is often unnecessary1
- Fruit and oil timing
- Fruit grows August–November; oil builds July–November1
- Pruning residue
- 3–4 t of fresh prunings per ha a year at about 300 trees/ha1
Perennial growth and climate in Italy
A perennial planting remains in the field for multiple years. Establishment is a long-term investment; flowering, fruit development, harvest and plant care recur as the planting matures. Follow the named cultivar and production system.
Establish a long-lived planting1,2
An olive grove stays in the field for decades, so there is no yearly planting window to follow: choose density, cultivar and training form once (see the density section) and then manage the calendar below every year.
Management: Control a cereal cover crop in late winter or early spring1
Where a live cereal cover is grown it is allowed to grow through autumn and winter and then controlled (for example by chemical mowing) in late winter or early spring.
Management: Fruit growth August–November1
Water stress in this window reduces fruit size.
Management: Oil build-up July–November1,4
Oil accumulates in the fruit through autumn; early harvest gives a more bitter, polyphenol-rich oil with lower yield, late harvest a higher yield and sweeter oil with more oxidation risk (producer guidance).
Harvest: September–December depending on region and cultivar4
Producer-reported windows: Sicily September–November; Lombardy–Veneto (Lake Garda) late October–mid-November; Tuscany mid-October–early December; Puglia October–December; Calabria November–December. Treat these as guides and follow your local advisory service.
Historical monthly climate
Reference period: 1996-01-01 to 2025-12-31. ERA5-Land monthly mean soil temperature at 0–7 cm, air temperature and frost days at the regional reference point (42.8, 12.8). Select a month to inspect its historical conditions.
Month tiles show mean air temperature.
February historical conditions
- Mean topsoil temperature
- 5.1°C
- Mean air temperature
- 5.5°C
- Mean frost days per month
- 10.0 days
Use this monthly history to assess winter exposure, seasonal heat and water planning. It does not calculate cultivar chill hours, flowering dates, frost damage during bloom or fruit maturity. Topsoil at 0–7 cm describes shallow soil context, not the full root zone. Harvest periods follow the production evidence above.
Climate source: Open-Meteo Historical Weather APIThe Italian olive sector in numbers
- Small farms dominate
- Ismea counted about 620,000 olive-oil companies in 2024, more than 4,200 mills, and about 1.162 million hectares of groves. 58% of farms manage under 3 ha and 17% manage 10–200 ha, so many holdings are too small for full mechanisation.3
- Production and yield trend
- The 2024/25 crop is about 250,000 t of oil. Italian yields this decade average 9% lower than the previous one, which is worth remembering before assuming a good national year.3
- Where the area is moving
- From 2020 to 2024 olive groves fell 6% in Campania and 5% in Puglia, but rose 20% in Sicily; Piedmont farm surface grew 40%, Friuli-Venezia Giulia 16% and other northern regions 10%. Puglia, Calabria and Sicily hold 72% of organic cultivation.3
Choose a planting density and training form
- 5 × 5 m (poly-conic vase)400 trees/ha
- 4 × 5 m (globe vase)500 trees/ha
- 3 × 5 m (free palmette)666 trees/ha
- 2 × 5 m (central leader)1,000 trees/ha
Between rows: 6 m · Within the row: 6 m
A 6 × 6 m square gives about 278 trees/ha. The IOC notes ultimate spacings of 5 × 5 to 7 × 7 m; irrigated orchards of 200–240 trees/ha have been the more reliable mid-term performers. Schematic, not to scale.
- Higher density is not always better
- The IOC reports that in Spain the largest cumulative crops over 10–12 years came from about 320 trees/ha on a square layout. In Greece there was no significant difference between 280 and 620 trees/ha after eight harvests, and in France a 6 × 3 m layout only beat 6 × 6 m in the early years.1
- Central Italy filler-tree trial
- On a 6 × 3 m layout in central Italy, cumulative yields were 30–40 kg per tree for the first five harvests before competition set in, and net of harvest costs the returns were no better than a 6 × 6 m layout.1
- A Sicilian density trial
- Three Sicilian cultivars (Calatina, Abunara, Nocellara del Belice) were grown at 400–1,000 trees/ha. Yields were 12–28 t/ha of olives and 1.5–5 t/ha of oil, and oil value ranged from €13,397 to €26,889/ha. Calatina was the smallest tree and the most yield-efficient; Abunara and Nocellara were vigorous and did better at lower density.2
- Match the system to the site
- The trial authors conclude that combinations of cultivar vigour, density and training form can all work in intensive pedestrian systems, which matters where terrain or water scarcity rules out super-high-density hedgerows.2
Feed with restraint and keep the soil covered
- 1
Late winter–early spring
Control a cereal cover crop if one is grown.
- 2
Any time
Apply nitrogen only if leaf analysis shows a deficit.
- 3
July–November
Oil builds in the fruit.
- 4
August–November
Fruit grows; water stress cuts size and oil content.
- 5
Harvest
Timing depends on cultivar and region.
- Low nitrogen demand
- Fruit removal is only about 3–4 g of nitrogen per kg of olives, and nitrogen also enters through mineralisation, rain and irrigation water. The IOC concludes that annual nitrogen applications are not necessary in most olive orchards to hold leaf levels and yield, and that over-applying nitrogen hurts oil quality.1
- Cover crops
- Live cereal covers in areas with 500–600 mm of rainfall should receive at least 50 kg N/ha on the covered area (about 100 kg of 46% urea), fertilised separately from the trees so the cover does not compete for the trees' nitrogen. The cover is allowed to grow in autumn and winter and controlled in late winter or early spring.1
- Prunings
- An intensive orchard of 300 trees/ha produces about 3–4 t of fresh prunings (about 50% moisture) a year. The wood can be used for fuel and the shoots and leaves shredded back into the soil.1
What the numbers mean for a new planting
- Olives, low end12 t/ha
- Olives, high end28 t/ha
- Oil, low end1.5 t/ha
- Oil, high end5 t/ha
Frequently asked questions
- How many olive trees per hectare in Italy?
- Mature orchards are typically 200–400 trees per hectare (5 × 5 to 7 × 7 m spacing); a Sicilian trial compared 400, 500, 666 and 1,000 trees per hectare.
- How much nitrogen do olive trees need?
- Little: fruit removes about 3–4 g N per kg of olives, and the IOC says annual nitrogen is unnecessary in most orchards. Cereal cover crops need at least 50 kg N/ha on the covered area.
- How much olive oil does Italy produce?
- About 250,000 tonnes in 2024/25 from roughly 1.16 million hectares, according to Ismea.
- What yield can an Italian olive orchard reach?
- A Sicilian density trial produced 12–28 t/ha of olives and 1.5–5 t/ha of oil, but national yields are far lower and fell 9% this decade.
- How big are Italian olive farms?
- 58% of olive farms manage under 3 hectares and 17% manage 10–200 hectares.
- Where are olive groves expanding in Italy?
- Sicily (+20%) and northern regions such as Piedmont (+40% surface) grew from 2020 to 2024, while Campania (−6%) and Puglia (−5%) declined.
Regional olive guides
Local dates, soil-temperature history and sources for specific regions:
Sources and image credits
- 1. International Olive Council — Production techniques in olive growing — 2007 manual. Tree spacing and orchard design, nitrogen requirement, cover crops, pruning residue and the olive growth and oil-build calendar.
- 2. Growth, yield and oil quality of adult pedestrian olive orchards grown at four different planting systems (Sicily) — 2024. Three Sicilian cultivars at 400–1,000 trees/ha: olive and oil yields and oil value.
- 3. Olive Oil Times — Italian olive oil sector demonstrates resilience in new report (Ismea) — 2025. Ismea farm numbers, area, production, organic share and regional change.
- 4. Volpi Originale — Olive harvest calendar in Italy (producer website) — Accessed 3 October 2026. Harvest windows by Italian region and the effect of early versus late harvest on oil. Producer guidance, not extension.
Figures are published averages or study assumptions for the places named, not guarantees for your field. Check current local recommendations and product labels before acting.