What is made here
Wine colours
Colours the rules allow. Pick a colour to filter the rules and grapes below.
Where it is
Prosecco in Italy
- Latitude
- 45.1°–46.7° N
- Vineyard altitude
- 4 m to 251 m
- Production zone
- 2,069,814 ha
Lies within
delle Venezie
Contains 33 appellations (outlined on the zone map)
Asolo Montello, Bagnoli di Sopra, Bagnoli Friularo, Breganze, Carso, Colli Asolani - Prosecco, Colli Berici, Colli di Conegliano, Colli Euganei, Colli Euganei Fior d'Arancio, Colli Orientali del Friuli Picolit, Collio Goriziano, Conegliano Valdobbiadene - Prosecco, Corti Benedettine del Padovano, Friuli, Friuli Annia, Friuli Aquileia, Friuli Colli Orientali, Friuli Grave, Friuli Isonzo, Friuli Latisana, Gambellara, Lison, Lison-Pramaggiore, Montello Rosso, Piave, Piave Malanotte, Ramandolo, Recioto di Gambellara, Riviera del Brenta, Rosazzo, Venezia, Vicenza
Worked out from the boundaries (smallest container first). They follow whole communes, so a neighbour sharing a commune can show up here too.
Boundary drawn from whole communes, so it is a little larger than the legal zone. Boundary: Eurac Research PDO inventory (CC0). Country outlines: Natural Earth. Dots on the zone map are the vineyard points used for climate.
Showing every colour The colour filter changes the rules and grapes. Climate, vintages and soils describe the vineyards, so they stay the same.
01 · What the law says
The rules
Limits on grapes, yields, ripeness and ageing that every wine labelled Prosecco must meet.
Blend rules
Prosecco-Wine
- – Glera · Main grape
- ≤ 15% Verdiso / Bianchetta trevigiana / Perera / Glera lunga / Chardonnay / Pinot bianco / Pinot grigio / Pinot nero (vinified white) · Allowed
Blend rules
Prosecco Vino Frizzante
- – Glera · Main grape
- ≤ 15% Verdiso / Bianchetta trevigiana / Perera / Glera lunga / Chardonnay / Pinot bianco / Pinot grigio / Pinot nero (vinified white) · Allowed
Blend rules
Prosecco Spumante
- – Glera · Main grape
- ≤ 15% Verdiso / Bianchetta trevigiana / Perera / Glera lunga / Chardonnay / Pinot bianco / Pinot grigio / Pinot nero (vinified white) · Allowed
Blend rules
Prosecco Spumante Rosé
- 85–90% Glera · Main grape
- 10–15% Pinot nero (vinified red) · Main grape
; release from 1 January of the year after the harvest.
Other varieties allowed
Besides the main grapes, the rules allow these varieties in some wines. Grape names link where a profile exists.
7 varieties · 7 wines
Bianchetta Trevigiana, Chardonnay, Perera, Pinot Blanc, Pinot Grigio, Pinot Noir, Verdiso
In the vineyard and cellar: rules for every wine
2,300
Vines per hectare, minimum
Training
Systems allowed
spalliera semplice; spalliera doppia
No forcing
Forcing the vines is prohibited
Permitted
Irrigation
Cellar
Where the wine must be made
Within the production zone
02 · Climate fingerprint
The climate
The growing season averages 18.3 °C, warm on Gregory Jones's scale, with 1,768 growing degree days (Winkler III).
The average year 1991–2020, vineyards at about 103 m
Monthly mean, °CRain, mmGrowing season
- Growing-season temperature
- 18.3 °C
- Warm · 17–19 °C (Jones)
- Growing degree days
- 1,768
- Region III: 1,667–1,943 degree days
- Growing-season rain
- 846 mm
- Of 1,320 mm a year
- Harvest rain
- 280 mm
- September–October
Copernicus ERA5-Land monthly averages at 5 vineyard points (Vineyard point 1, 19 m; Vineyard point 2, 164 m; Vineyard point 3, 166 m; Vineyard point 4, 5 m; Vineyard point 5, 161 m), moved to each point's height from the model's terrain. Indices that need daily data are not captured yet. How the climate figures are made.
Lower confidence:Monthly reanalysis in moderately complex terrain; not yet checked against a weather station.
Closest climates in the database
Picked by the data, not by hand: the profiles nearest on season warmth (counted twice), degree days, rain, ripening-month nights and day–night range. Neighbours within 30 km are left out, as they share the same weather.
1. Friuli AquileiaVery similarCompared with Prosecco: same season warmth, similar rain.
2. VicenzaVery similarCompared with Prosecco: same season warmth, similar rain.
3. Monti LessiniVery similarCompared with Prosecco: same season warmth, similar rain.
Growing-season temperature
Growing degree days
Growing-season rain
03 · Year by year
35 vintages
Each column is one growing season: heat above or below the 1991–2020 average, and rain at harvest. Pick a year for the details.
Warmer than averageCooler than averageHarvest rain (Sep–Oct)Average harvest rain, 280 mm
2025
- Growing-season temp.
- Growing degree days
- Harvest rain
- Growing-season rain
- September nights
- Hot days and frosts
Seasons are labelled by harvest year (April–October). Year-to-year changes from ERA5-Land; tested against station records in Alto Adige (r = 0.94 for season temperature at Bolzano). Rain varies more locally, so treat single-season rain with some caution. Vintage ratings, harvest dates and frost or hail events have places in the data model but are not loaded yet.
04 · Where the numbers come from
Sources
- A geospatial inventory of regulatory information for wine protected designations of origin in Europe · Candiago et al., Scientific Data 9, 394 (2022); Eurac Research · CC0
- Quality wines in Italy and France: a dataset of PDO specifications · figshare 25393261 · CC BY 4.0
- ERA5-Land monthly averaged data (reanalysis-era5-land-monthly-means) · Copernicus Climate Change Service (C3S), Climate Data Store · CC BY 4.0 (Copernicus licence)
- OpenStreetMap vineyard areas (landuse=vineyard), from Geofabrik country extracts · OpenStreetMap contributors · ODbL 1.0
- Copernicus DEM GLO-90 (AWS open data tiles) · European Space Agency / Copernicus · Copernicus DEM licence
- Disciplinare di produzione: Prosecco (version published by MASAF up to May 2023, via the Internet Archive; later amendments not yet included) · Ministero dell'agricoltura, della sovranità alimentare e delle foreste (MASAF) · Official act
- Appellation nesting worked out from boundaries (pipeline/build_nesting.py) · Vinous, from the Eurac PDO boundaries · CC0 (source data)
- Climate profiles calculated by Vinous: method
Still to check (3)
- Generated from EU reference data: check against the current product specification.
- From the specification: Training and density rules apply to vineyards planted after approval of the specification; older pergola vineyards are allowed at up to 80,000 buds/ha. For the Spumante Rosé the Pinot nero yield is 13.5 t/ha (Glera 18 t/ha) and the wine must spend at least 60 days in tank. Sweetness ranges (secco to amabile, brut nature to demi-sec or extra dry) are not recorded; the Frizzante may be refermented in bottle or in tank, the bottle-fermented version needing only 4.0 g/l acidity. Up to 15% wine from Chardonnay or the Pinots may be added to Spumante batches.
- National tier (DOC/DOCG) not captured yet; rules extracted from the specification text.